40results about How to "Facilitate large-scale application" patented technology

The invention discloses a test device and a test method for the performance of a photovoltaic module in the high-temperature environment. The device comprises a high-temperature oven and further comprises an external test board. An internal test board is mounted in the high-temperature oven and connected with the external test board, and an output end of the external test board is transmitted to a computer. According to the test device and the test method, the heating test is performed on the whole photovoltaic module directly, sample data of 5 key parameters of the photovoltaic module under the temperature change are acquired, and the sample data are calculated through an Arrhenius model, accordingly, the service life of the photovoltaic module under the normal condition is evaluated; and testing can be performed without stripping a light-emitting diode (LED), and scale applications of the test are facilitated; and accelerated factors corresponding to the optimum test temperature can obtain a maximum value. When the test is performed on the temperature, the test time is actually far shorter than time required by the test performed at the specified temperature, the test time is only about 5% of the prior test time, and the test time is greatly shortened.

The invention discloses a method for preparing an anode of a solid oxide fuel cell by using an immersion method, belongs to the method for preparing the anode of a fuel cell, and solves the problem of easiness in performance weakening caused by low stability and easiness in aging of the conventional anode, which is prepared by using the immersion method, of the solid oxide fuel cell. The method comprises the following steps of: 1, preparing immersion liquid; 2, adding the immersion liquid into a porous anode supporting body, and roasting; 3, repeating the step 2, and sintering in an air atmosphere; and 4, restoring, and thus obtaining the anode of the solid oxide fuel cell. The method has the advantages that: selectable raw material sources are wide; a preparation process is simple; expensive experimental instruments are not required; large-scale application can be realized; the stability of the anode, which is prepared by using the immersion method with a dispersing agent, of the solid oxide fuel cell is improved; the electric conductivity and catalytic performance of the anode can be improved; porosity can be guaranteed by immersion of the porous anode supporting body; and fuel gas can smoothly reach the anode and an electrolyte interface for reaction, and generated water is drained.

The invention discloses a FeCoNi@C / carbon fiber aerogel composite absorbing material. The composite absorbing material comprises a carbon fiber matrix and a FeCoNi@ carbon composite nanosphere, wherein the FeCoNi@ carbon composite nanosphere is loaded on the surface of the carbon fiber matrix. The composite absorbing material takes carbon fibers as the matrix, and the microspherical FeCoNi@C derived from FeCoNi-MOF is loaded on the surface of the matrix; the prepared composite material solves a problem that a single carbon material and a monometallic MOF derivative material lack a plurality ofeffective electromagnetic wave loss mechanisms to cooperate, the good impedance matching is obtained, the better absorption efficiency is achieved, and the composite material is an ideal selection ofa novel light-weight and efficient microwave absorbing material.

The invention discloses an omni-directional imaging device and method. The omni-directional imaging method comprises the steps of: dividing a circular big imaging surface formed by a specially designed long-focus big imaging surface reflex type panorama annular lens on a plane or a spherical surface into multiple sector-shaped sub-imaging surfaces averagely; delivering each sub-imaging surface or each expanded sub-imaging surface to a corresponding image sensor through a conical optical fiber panel with the size matching with that of each sub-imaging surface; unfolding the images received by all the image sensors into rectangular images and splicing the images according to the sequence thereof on the circular imaging surface so as to obtain an omni-directional image by utilizing an image processing unit; and finally sending the omni-directional image to the display unit for displaying. As the conical optical fiber panel and the long-focus big imaging surface reflex type omni-directional annular lens are combined, real-time 360-degree panorama omni-directional imaging of a big imaging surface is realized; as multiple image sensors are utilized for image splicing, a bigger image surface can be obtained; and an image resolution rate of an edge part of a field of view can be increased.

The invention discloses a direct flame type solid oxide fuel battery pack and a preparation method thereof, and belongs to the field of electrochemical power generation. The preparation method solves the problems that the preparation process of the traditional direct flame type solid oxide fuel battery pack is complex and has high cost. A plurality of holes are arrayed on a heat-resisting insulating thin plate supporter; a conducting net is covered on each hole; a single battery is adhered to the upper surface of each conducting net; a plurality of single batteries are connected in series, in parallel or in series and parallel through leads to form the battery pack; and the cathode and the anode of the battery pack are led out by the leads. The preparation method comprises the following steps of: digging the plurality of holes on the heat-resisting insulating thin plate supporter and covering the conducting net on each hole; adhering the single battery to the upper surface of each conducting net by using conducting slurry and performing heat treatment to cure and stabilize the single battery at the temperature of between 50 and 500 DEG C; and connecting the plurality of single batteries in series, in parallel or in series and parallel through the leads to form the battery pack, and leading the cathode and the anode of the battery pack out through the leads. The direct flame type solid oxide fuel battery pack of the invention is used for providing electric energy and heat energy.

The invention discloses a microbial fuel cell and a method for enhancing discharge voltage of the microbial fuel cell by using biochar. The microbial fuel cell comprises an anode electrode, anode electrode liquid and a cathode electrode, wherein the anode electrode liquid is organic wastewater containing biochar which adsorbs organic matters. The method comprises the following steps: configuring the microbial fuel cell, starting and running the microbial fuel cell, and treating the organic wastewater by using the microbial fuel cell, wherein the anode electrode liquid of the microbial fuel cell is the organic wastewater containing the biochar which adsorbs the organic matters. The organic matters in the organic wastewater are enriched in the biochar, and mixed liquid of the biochar and the organic wastewater is prepared as the anode electrode liquid of the microbial fuel cell, so that the discharge voltage of the microbial fuel cell can be improved, the problem that in the wastewater treatment process utilizing the microbial fuel cell, popularization on a large scale is difficult, and the large-scale application of the microbial fuel cell is facilitated.

The invention belongs to the technical field of new energy materials and particularly relates to a method for preparing hierarchical porous heteroatom-rich one-dimensional carbon nanocones through one-step carbonization after organic metal complexes are prepared through simple complexation reactions of ferric salt and organic ligands in a room temperature environment. A one-dimensional carbon nanocone material has multifunctional energy storage applications, can have the reversible capacity of 758 mA h g<-1> after being circulated for 60 times under the current density of 50 mA g<-1> when used as an anode material of a lithium-ion battery, can have the capacity up to 182.7 F g<-1> at the sweep speed of 5 mV s<-1> when applied to a capacitor, and can still have the capacity of 188 mA h g<-1> after being circulated for 400 times under the current density of 100 mA g<-1> when used as an anode material of a sodium-ion battery. Besides, the one-dimensional carbon nanocone material shows higher potential in the aspect of sulfur storage. Raw materials for synthesis of the material are cheap, and the synthesis process is convenient, so that the method is very suitable for large-scale industrial production.

The invention discloses an urban road intersection self-adaption control method based on single video. According to the method disclosed by the invention, a vehicle flow direction detection point position of a conflict area in an intersection is arranged according to intersection environment and actual installation position of video detection equipment, and the point position contains vehicle movement tracks in all the release directions; video collection equipment is used for detecting outlines and movement states of vehicles in a detection area and performing statistics on traffic flow; a phase position release mode, the maximum green light, the minimum green light and a phase position switching speed are designed according to site situations; traffic signals are controlled according tomovement situations detected by the video detection equipment of vehicles in the area in the intersection. The method can effectively reduce construction cost of the intersection, improves urban intersection traffic efficiency and achieves the purpose of relieving traffic jam.

The invention provides an ultra-long carbon nanotube preparation device and an ultra-long carbon nanotube preparation method. According to the invention, large-scale preparation of ultra-long high-conductivity carbon nanotube powder is realized based on a floating catalysis chemical vapor deposition technology and with the designs of an improved fixed bed and a special substrate. According to the invention, a liquid carbon source safe under a pure inert atmosphere is selected, and quartz glass microspheres with good chemical stability are adopted as a substrate. With intermittent water etching and an improved sampling device, the carbon nanotubes can be rapidly moved out of the reaction system and can collected. With the preparation method provided by the invention, operation process is simple, and cost is greatly saved.

The invention provides a lithium ion battery negative material Li4Ti5O12 / TiO2 / RGO and a preparation method thereof. The method adopts hydrothermal synthesis and further calcination process, uses TBT, RGO and CH3COOLi.2H2O as raw materials, adopts ethanol as a solvent, and conducts thermal reaction to prepare a precursor; and subsequently, the precursor is calcined at a high temperature in an air atmosphere to obtain a target product. The lithium ion battery negative material prepared by the method comprises a main body of a RGO thin layer loaded with LTO / TiO2 nanoparticles, maintains the excellent performance of the main body LTO and utilizes the characteristics of high specific capacity and good stability of TiO2; and the addition of the RGO with good conductive property can effectively reduce the agglomeration phenomenon among nanoparticles, increase the specific surface area of the material, and provide more channels of diffusion for the lithium ions, thereby enhancing the overall electronic conductivity of material. The invention has great prospects of application.

The invention discloses an electronic chip self-adaptive micro-channel cooling device and a manufacturing method thereof.The electronic chip self-adaptive micro-channel cooling device comprises an analog chip with one face provided with a micro-channel structure, a hydrogel micro-valve, a manifold distributor / collector, a sealing film layer, a PCB and a substrate. The hydrogel micro-valve realizesintelligent regulation and control on the flow of the micro-channel through the change of the volume of the hydrogel micro-valve along with the thermal load. When the self-adaptive micro-channel cooling device is manufactured, firstly, the micro-channel structure and the metal coating are machined, molten paraffin is filled, the periphery of the micro-column structure is embossed with the hydrogel micro-valve outline, then the embossed outline is filled with the hydrogel solution, paraffin is cleaned after polymerization is completed, and the hydrogel micro-valve integrated in the channel isobtained. Finally, the components are pressed and compacted. The micro-channel cooling device is simple in structure and easy to manufacture in batches, has a good flow adjusting effect, and can solvethe problems of pump power waste and cooling economy of traditional micro-channel cooling.

The invention provides a fucoxanthin composite nanofiber and a preparation method thereof. The preparation method comprises the following steps that S1, fucoxanthin and cyclodextrin are correspondingly dissolved in an edible polar organic solvent to prepare a fucoxanthin mixed dispersion system; step 2, polyvinylpyrrolidone is added into the fucoxanthin mixed dispersion system to obtain a spinning solution, and defoaming is carried out; and step 3, wet electrospinning is carried out by using an electrostatic spinning process, and the fucoxanthin composite nanofiber is collected. The fucoxanthin composite nanofiber changes the limitation that fucoxanthin is insoluble in water while retaining the activity of fucoxanthin, and the thermal stability of fucoxanthin is improved; according to the preparation method, edible solvents are adopted in fiber preparation, any other harmful solvents and diluents are not used, and the method is easy to collect and use and environmentally friendly; and the whole preparation process is simple in technology, low in device requirement, low in energy consumption in the process and low in cost, and can be widely applied to rapid dissolution of fucoxanthin or large-scale application in food industry.

The invention provides a method for raising a dehydration property of fermentation acid production sludge. The method comprises steps: first, sludge is provided; second, Fe<2+> and sulfur in a reduction state are added in the sludge, and culture is carried out until the pH value of the sludge is lowered; third, the acidized sludge obtained from the second step is added into fresh sludge, and the second step is repeated; fourth, the third step is repeated for several times and therefore seed sludge is obtained; fifth, the obtained seed sludge is inoculated in fermentation acid production sludge, Fe<2+> and sulfur in a reduction state are added in the fermentation acid production sludge with the inoculated seed sludge, culture is carried out in a mode same as the mode in the second step until the specific resistance of the fermentation acid production sludge is lowered.

The invention belongs to the field of photocatalytic materials and hydrogen storage materials, and particularly relates to a graphene-based composite as well as a preparation method and application thereof. The graphene-based composite material provided by the invention comprises a single-layer carbon-nitrogen material and graphene bonded to the two sides of the single-layer carbon-nitrogen material by a van der waals force. The composite material provided by the invention has good light absorption capacity in ultraviolet and visible light ranges of a solar energy, can efficiently collect thesolar energy, and thus is suitable for the field of photocatalysis. On the other hand, by utilizing the efficient selective permeability of graphene, the composite provided by the invention allows protons to penetrate through the graphene to participate in reaction, the newly produced hydrogen cannot escape, OH, O2 and the like are blocked from entering a system at the same time, adverse reactionis inhibited, and effective purification and safe storage of hydrogen can be realized, so that the composite is also suitable for the field of hydrogen storage.

The invention discloses a microwave-assistant extraction method of recombinant Escherichia coli Pfu DNA (deoxyribonucleic acid) polymerase. The method comprises the steps of adding a buffer solution and an assistant extracting agent into an Escherichia coli thallus cell cluster of recombinant expression Pfu DNA polymerase to ensure that thallus cells are uniformly dispersed; performing extraction on the obtained mixed solution in a microwave field of which the power is 200-1000W, and keeping the temperature of the mixed solution to be in a range of 70-95 DEG C during extraction. The method disclosed by the invention can be used for finishing the processes of cell wall breaking and thermal denaturation through one step in the same device, and compared with the conventional method, the operation time and extraction steps are reduced, the investment of operation equipment is reduced, the microwave radiation heating energy efficiency is relatively high, energy conservation and environmental protection are ensured, and the reaction process is controllable and easy to amplify.

The invention discloses an electrochromic device based on a multifunctional hydrogel electrolyte. The electrochromic device structurally comprises a layer of ITO electrode, an electrochromic layer and a layer of multifunctional hydrogel electrolyte, wherein the multifunctional hydrogel electrolyte replaces an electrode, an ion storage layer and an ion conducting layer of a traditional electrochromic device, electrons are transmitted to an electrochromic material on the surface of the hydrogel electrolyte through ITO when voltage is applied, and oxidation reduction occurs. The invention further provides a preparation method of the electrochromic device based on the multifunctional hydrogel electrolyte. According to the invention, the device is simple in structure, few in preparation steps, environment-friendly, good in repeatability and suitable for industrial production, and water is used as a solvent to reduce harm to human bodies.

The invention discloses a speed real-time tracking hydraulic control method, a speed real-time tracking hydraulic control system and engineering machinery, and the speed real-time tracking hydraulic control method adjusts the working medium flow of a hydraulic execution element based on a flow valve, the speed real-time tracking hydraulic control method comprises the following steps that according to the instruction control speed and the valve front and rear pressure difference delta P, collected in real time, of a flow valve, the actually-needed valve element overflowing opening area A of the flow valve is obtained; on the basis of the actually-needed valve element overflowing opening area A and the load feedback pressure PF, the actually-needed valve element overflowing opening area A is corrected according to the corresponding relation, and therefore the corresponding ideal valve element overflowing opening area Ad is obtained; and the flow valve is controlled in real time by a control signal corresponding to the ideal valve core overflowing opening area Ad. According to the invention, the speed control of the hydraulic actuator can be automatically realized, the automation degree of speed control is improved, the interference of human factors on the control process can be avoided, the control accuracy is improved, and the jogging stability is improved.

The invention belongs to the technical field of preparation of carbon nanotube catalysts, and particularly relates to a carbon nanotube catalyst prepared by utilizing a Fenton reagent as well as a preparation method and application of the carbon nanotube catalyst. The method comprises the following steps: (1) firstly dispersing carbon nanotubes in a hydrogen peroxide solution, and then adding a metal compound to form a mixed solution; (2) reacting the mixed solution under ultraviolet light, and filtering and drying to obtain the carbon nanotube catalyst; wherein when the reaction is carried out under the ultraviolet light, the method also comprises a step of supplementing hydrogen peroxide into the mixed solution. The carbon nanotube catalyst obtained by the method has a complete structure and few defects, and metal particles in the catalyst are small and uniformly dispersed. According to the invention, the metal is uniformly loaded in the carbon nanotubes while the oxidation of the carbon nanotubes is realized, so that the process steps are simplified, the active sites of the carbon nanotube catalyst are increased, and the reaction activity of the catalyst is improved.

The present invention provides an energy storage optimization configuration method and system. The energy storage optimization configuration method includes: determining the discharge price of the energy storage power station during peak hours, determining the charging price of the energy storage power station during off-peak hours, and determining the auxiliary power of the energy storage power station to participate in peak regulation. Service compensation price; based on the discharge price of the energy storage power station during peak hours, the charging price of the energy storage power station during off-peak hours, and the compensation price of auxiliary services for the energy storage power station participating in peak regulation, determine the maximum net income of the energy storage power station; based on the Describe the maximum net income and constraints of the energy storage power station, and determine the capacity configuration of the energy storage power station. The energy storage optimization configuration method, system, electronic equipment and storage medium of the present invention can optimize the configuration of the energy storage power station based on the price mechanism, and can determine the optimal capacity configuration of the energy storage power station, so that the revenue of the energy storage power station can be maximized, Contribute to the large-scale application of energy storage power stations.

The invention discloses a method of improving flotation separation effect of waste lithium batteries by gamma-ray irradiation. The method can solve the problems that during a mechanical and physical recovery process of waste lithium batteries, natural floatability is passivated since the surfaces of electrode materials are coated with organic passivating film and lithium cobalt oxide and graphiteare difficult to separate through flotation. The method mainly includes steps of: under normal temperature and pressure, placing a waste lithium battery electrode material in Co[60] gamma radioactivesource atmosphere, and irradiating the electrode material under the irradiation dose rate of 0.5-50 kGy / h for 1.5-15 h. After irradiation, the difference value between contact values of the lithium cobalt oxide and graphite in the electrode material is increased by 30-40 degrees, so that through the flotation, recovery rate of cobalt can reach 85-95%. The method has simple operation, is high in processing efficiency, is free of secondary pollution and is suitable for large-scale application.

The invention discloses a FeCoNi@C / carbon fiber airgel composite wave-absorbing material. The composite wave-absorbing material includes a carbon fiber matrix and FeCoNi@carbon composite nano-microspheres, and the FeCoNi@carbon composite nano-microspheres are loaded on the surface of the carbon fiber matrix. In the present invention, carbon fiber is used as a matrix, and microspherical FeCoNi@C derived from FeCoNi-MOF is loaded on its surface. The prepared composite material solves the lack of multiple effective electromagnetic wave loss mechanisms of a single carbon material and a single-metal MOF-derived material. The problems, good impedance matching and better absorption efficiency are obtained, and it is an ideal choice for new lightweight and efficient microwave absorbing materials.

The invention belongs to the technical field of new energy resources and particularly relates to a preparation method of a zinc germanate / carbon complex fiber cathode material for a lithium ion battery. According to the preparation method, volume-phase or micrometer-sized or nanometer-sized zinc germanate dissolves in a macromolecular solution by using organic acid, and a zinc germanate / carbon composite material with a self-supporting structure and having certain flexibility is prepared by adopting an electrostatic spinning and high-temperature calcination combination method. The material can be directly cut into electrode slices to be applied to a lithium ion battery cathode, extra addition of a conductive agent and a binding agent and a current collector not needed in the electrode preparing process, and the overall weight of the cathode is greatly decreased. After the material is assembled into a button battery, excellent electrochemical performance is played, the capacity is kept to be greater than 900 mAh g<-1> after 300-time cycling under the condition of 1 A g<-1> current density, and the coulombic efficiency is above 99%. The zinc germanate / carbon complex fiber cathode material for the lithium ion battery is low in cost, simple in production process and high in safety, and a compound prepared by utilizing the material can be applied to a portable electronic device, an electric automobile and a wearable electronic product.

The invention discloses a preparation method of a nitrogen-doped three-dimensional graphene-based fuel cell cathode catalyst. The method comprises the steps of 1, uniformly dispersing graphene oxide,a carbon source and sodium dodecyl sulfate in deionized water for carrying out a hydrothermal reaction, and carrying out washing and drying to obtain a three-dimensional graphene material; and 2, uniformly mixing the three-dimensional graphene material with a nitrogen source and potassium hydroxide, and carrying out high-temperature carbonization, cooling, washing and drying to obtain the nitrogen-doped three-dimensional graphene-based fuel cell cathode catalyst. The carbon source and the graphene oxide are compounded, and amorphous carbon generated by the carbon source is uniformly loaded ongraphene sheet layers, so that stacking agglomeration among the graphene sheet layers is prevented; and the three-dimensional graphene material with a large number of multi-level pore channels is obtained, so that nitrogen atoms can enter a skeleton of the three-dimensional graphene material to be doped to form a catalytic activity center, the number of catalytic active centers is increased, and the catalytic performance of the nitrogen-doped three-dimensional graphene-based fuel cell cathode catalyst is improved.

The invention belongs to the field of sodium ion secondary batteries, and particularly discloses preparation and application of a sodium ion secondary battery electrolyte containing graphene oxide. The graphene oxide is dispersed in a common solvent for the sodium-ion battery electrolyte. The invention also discloses a corresponding preparation method which comprises the following steps: firstly, adding the graphene oxide into an organic solvent, and carrying out heating ultrasonic treatment and heating stirring treatment for a certain time to form an organic solvent dispersion liquid of the graphene oxide; and then adding the dispersion liquid into the electrolyte according to a certain proportion to form the sodium-ion battery electrolyte containing graphene oxide. The preparation process is simple, industrial regulation and control are easy, the graphene oxide in the electrolyte can be subjected to reduction reaction on the surfaces of the positive electrode and the negative electrode to form a uniform reduced graphene protection layer, corrosion of the electrolyte to an electrode material is prevented, the electrochemical performance of the electrode is obviously improved, and the cycling stability of the battery is improved.

The invention discloses a test device and a test method for the performance of a photovoltaic module in the high-temperature environment. The device comprises a high-temperature oven and further comprises an external test board. An internal test board is mounted in the high-temperature oven and connected with the external test board, and an output end of the external test board is transmitted to a computer. According to the test device and the test method, the heating test is performed on the whole photovoltaic module directly, sample data of 5 key parameters of the photovoltaic module under the temperature change are acquired, and the sample data are calculated through an Arrhenius model, accordingly, the service life of the photovoltaic module under the normal condition is evaluated; and testing can be performed without stripping a light-emitting diode (LED), and scale applications of the test are facilitated; and accelerated factors corresponding to the optimum test temperature can obtain a maximum value. When the test is performed on the temperature, the test time is actually far shorter than time required by the test performed at the specified temperature, the test time is only about 5% of the prior test time, and the test time is greatly shortened.

The invention discloses a temperature sensing system of a DC power distribution cabinet for supplying power to a high-performance computer room. The temperature sensing system comprises a plurality oftemperature sensors, a temperature monitoring module, a serial sever and a background server, wherein the plurality of temperature sensors are surface-mounted onto an incoming line busbar and an outgoing line busbar of a circuit breaker in the DC power distribution cabinet and are used for acquiring temperature data and transmitting the temperature data according to a communication address configured in advance, the temperature monitoring module is connected with the plurality of temperature sensors by a 1-WIRE bus and is used for receiving the temperature data transmitted by the plurality oftemperature sensors in a concentrated way and transmitting the temperature data after integrating to form the temperature data, the serial server is connected with at least one temperature monitoringmodule by a RS485 bus, the background server is used for receiving a data set of the serial server and determining attribute of the temperature data according to a mapping table of the correspondingaddress in the data set during temperature data receiving and a preset communication address. By the temperature sensing system, the temperature change condition of a key point in the DC power distribution cabinet can be fed back in real time and on a large scale, real-time monitoring and accurate positioning of a fault are facilitated, the data real-time performance is good, and the system safetyand cost performance is high.

The invention discloses an urban road intersection self-adaption control method based on single video. According to the method disclosed by the invention, a vehicle flow direction detection point position of a conflict area in an intersection is arranged according to intersection environment and actual installation position of video detection equipment, and the point position contains vehicle movement tracks in all the release directions; video collection equipment is used for detecting outlines and movement states of vehicles in a detection area and performing statistics on traffic flow; a phase position release mode, the maximum green light, the minimum green light and a phase position switching speed are designed according to site situations; traffic signals are controlled according tomovement situations detected by the video detection equipment of vehicles in the area in the intersection. The method can effectively reduce construction cost of the intersection, improves urban intersection traffic efficiency and achieves the purpose of relieving traffic jam.

The invention relates to a device and a method for detecting whether focusing of a tower-type solar power generation system is precise. The device comprises a first detection body and a second detection body, wherein the first detection body has a first plane, a second plane and a third plane which can reflect light rays and allow the light rays to penetrate through, and the first plane, the second plane and the third plane are arranged at 90 degrees and intersect at a point O; and the second detection body has a fourth plane which can reflect light and allow the light to penetrate through, and the fourth plane is obliquely arranged on the front side, away from the point O, of the first detection body. According to the device and the method, the reflection and light transmission principlesof light are fully utilized, the irradiation direction of solar rays is fed back by means of images of the sun, whether focusing of a heliostat is precise or not can be directly judged through judging whether the solar images are aligned with a heat collector of the tower-type solar power generation system, the detection is very intuitive and convenient, the detection time is greatly saved, and the correction efficiency is improved; and the device is simple in structure, low in cost, and convenient to realize large-scale application.

The invention provides a lithium ion battery negative material Li4Ti5O12 / TiO2 / RGO and a preparation method thereof. The method adopts hydrothermal synthesis and further calcination process, uses TBT, RGO and CH3COOLi.2H2O as raw materials, adopts ethanol as a solvent, and conducts thermal reaction to prepare a precursor; and subsequently, the precursor is calcined at a high temperature in an air atmosphere to obtain a target product. The lithium ion battery negative material prepared by the method comprises a main body of a RGO thin layer loaded with LTO / TiO2 nanoparticles, maintains the excellent performance of the main body LTO and utilizes the characteristics of high specific capacity and good stability of TiO2; and the addition of the RGO with good conductive property can effectively reduce the agglomeration phenomenon among nanoparticles, increase the specific surface area of the material, and provide more channels of diffusion for the lithium ions, thereby enhancing the overall electronic conductivity of material. The invention has great prospects of application.