34results about How to "Reduce oxygen deficiency" patented technology

The invention provides a doped high-voltage positive electrode material and a preparation method thereof, and specifically includes a doped high-voltage lithium cobalt oxide and a high-nickel ternarypositive electrode material and preparation methods thereof. The chemical general formula of the doped high-voltage lithium cobalt oxide is LiaCoMbO2, in the formula, a is greater than or equal to 0.9and smaller than or equal to 1.2, b is greater than 0.000001 and less than 0.5, and M is one of Y, Tb and Pr, or two or more of Zn, Y, Tb and Pr. The doped high-voltage high-nickel ternary positive electrode material is characterized in that: the chemical general formula is Lia[Ni1-x-yCoxMny]MbO2, in the formula, a is greater than or equal to 0.9 and smaller than or equal to 1.2, x is greater than 0 and less than or equal to 1, y is greater than 0 and less than or equal to 1, x+y is greater than 0 and less than or equal to 1, b is is greater than 0.00001 and less than 0.5, and M is one or twoof Tb and Pr.

The invention provides a C-axis aligned crystalline IGZO thin film and a preparation method of the C-axis aligned crystalline IGZO thin film. According to the preparation method of the C-axis aligned crystalline IGZO thin film, the C-axis aligned crystalline IGZO thin film is prepared through an atomic layer deposition method, the structure of C-axis aligned crystalline IGZO can be precisely controlled at the atomic level, the crystalline mass of the prepared C-axis aligned crystalline IGZO is good, the number of the oxygen vacancies is small, and the TFT stability can be improved; due to the fact that the area of a crystalline region in the prepared C-axis aligned crystalline IGZO thin film is larger, the hundred-micron level to the millimeter level is reached, and thus the large-scale application of the C-axis aligned crystalline IGZO can be promoted; and meanwhile the C-axis aligned crystalline IGZO thin film is prepared by the adoption of the optimum process condition, the production yield can be increased, and the production cost is lowered. According to the C-axis aligned crystalline IGZO thin film, the crystalline quality of the C-axis aligned crystalline IGZO is good, the number of the oxygen vacancies is small, the TFT stability can be improved, meanwhile the area of the crystalline region is larger, and thus the mass application of the C-axis aligned crystalline IGZO is facilitated.

The invention discloses an anode aluminum foil forming device. The anode aluminum foil forming device comprises multiple electrode plates (3), inner circulation pipe networks (11) and a circulation pump (8) connected with the inner circulation pipe networks, wherein the electrode plates (3) and the inner circulation pipe networks (11) are arranged in a forming tank (6). The anode aluminum foil forming device further comprises direct-current electromagnets (10) arranged in the forming tank (6). The direct-current electromagnets (10) are soaked in forming liquid (5) in the forming tank. Multiple heat uniformization holes are evenly distributed in each electrode plate (3). The anode aluminum foil forming device has the beneficial effects that forming liquid circulating performance is good, electrical conductivity is high, interface tension is large, and the concentration and temperature of the forming liquid are uniform in distribution, so that the number of oxygen vacancies of forming films is small, the thickness of oxide films is uniform, the specific volume is large, bending performance is good, and the high-temperature service life is long.

The invention relates to a method for preparing spinel lithium manganate serving as a cathode material of a lithium ion power battery. The method comprises the following steps of: 1) selecting raw materials, namely mixing manganese oxide, a lithium source material and doped metal element oxide; and 2) uniformly mixing the mixture obtained in the step 1), feeding into a continuous sintering furnace, performing high-temperature gradient sintering (namely sintering at the temperature of between 1,000 and 1,200 DEG C for 3 to 5 hours in the first sintering step, sintering at the temperature of between 800 and 900 DEG C for 4 to 6 hours in the second step and sintering at the temperature of between 500 and 700 DEG C for 5 to 8 hours in the third step), introducing compressed air simultaneously, naturally cooling after the sintering is finished, grinding, performing grading treatment, and thus obtaining the cathode material. The invention has the advantages that: the method has a simple process; the crystallinity and the surface state of lithium manganate are controlled through the high-temperature sintering, so that the dissolving rate of manganese is reduced; and then oxygen defects are controlled or overcome through low-temperature sintering.

The invention discloses a composite coated ternary precursor and a preparation method and application thereof, the material comprises a ternary precursor and a coating layer attached to the surface of the ternary precursor, and the coating layer is obtained by precipitation reaction of first metal ions and first polyanions; metal ions and polyanions can be subjected to precipitation reaction to form precipitates, the surface of the ternary precursor has a large number of active sites and high specific surface energy, and the precipitates are easy to adhere and grow, so that a uniformly distributed coating layer is formed on the surface of the ternary precursor. After the coated precursor is sintered into the positive electrode material, one part of the coating can form a protective layer on the surface of the material, so that the dissolution of Ni and Co is reduced, the side reaction of the positive electrode material and electrolyte is inhibited, and the irreversible phase change of the surface of the material is reduced, thereby improving the stability of the ternary material; and the other part of the coating can permeate into the material to form bulk phase doping.

The invention discloses a bar-shaped combination electrode in aluminum foil formation energy-endowing groove and preparation method thereof. The bar-shaped combination electrode is characterized in that plate electrodes of 1500*520mm in the energy-endowing groove are separated to more than two bar-shaped electrode plates of 50*120mm with distance of 10mm, two ends of the each two bar-shaped electrode plate are welded on stainless steel material like ladder, and holes with different specifications are arranged on the bar-shaped electrode plates according to distribution rule of current density on the aluminum foil. The invention has advantages that the bar-shaped combination electrode not only can shunt, but also can make electrolyte between and round the electrodes fully cycle and temperature and concentration uniform, so that current density on the aluminum foil is reasonably distributed, and temperature and concentration of the electrolyte is easily to control in process range, thereby improving oxide film structure, increasing density, reducing oxygen omission in the film, and increasing performances of the aluminum foil.

The invention relates to a solid waste treatment device with a filtering structure and easy to maintain. The solid waste treatment device comprises a main body, a drive motor and a cover plate. A separation cylinder is fixed on the inner wall of the main body. A fixing frame is connected to the bottom of the separation cylinder. The separation cylinder is connected with the fixing frame through screws. The drive motor is mounted on the inner side of the fixing frame. The fixing frame is movably connected with the drive motor. The cover plate is arranged at the bottom of the drive motor. Corrugated tubes penetrate the outer side of the cover plate. The cover plate is connected with the drive motor through screws. The cover plate is fixedly connected with the corrugated tubes. An incineratorbarrel is arranged below the cover plate. The solid waste treatment device has the beneficial effects that the solid waste treatment device with the filtering structure and easy to maintain is provided with a filtering box, the filtering box can filter harmful gas generated during the operation of the device, so that environmental pollution caused by direct discharge is avoided, and the safety ofthe operation of the device is improved.

The invention provides a multilayer gradient structure coating for a cutting tool and a preparation method thereof. The coating comprises m(AlCrN / TiAlTaN) layers, n(AlCrN / TiAlTaN / TiAlSiN) layers and k(AlCrN / TiAlTaN / TiAlSiN) layers and k( TiAlTaN / TiAlSiN) layer, the thickness of the coating is 0.7-9 μm; wherein, m, n, k are modulation periods, 1≤m≤1500; 0≤n≤1000; 0≤k≤1500. The method includes: removing dirt on the surface of the cutting tool, and activating the surface of the cutting tool; using cathode arc ion plating technology to periodically and alternately deposit the above-mentioned coatings on the cutting tool substrate; Floor. The above-mentioned multi-layer gradient structure coating overcomes the contradiction that the traditional hard coating cannot have both wear resistance and toughness, and at the same time exhibits excellent oxidation resistance and high temperature stability.

The invention relates to a preparation method of an anode material for a lithium ion battery. Component of the anode material is LiNi0.5Mn1.5O4-deltaFx, wherein, the delta equals 0.5x, and x is not less than 0.01 and not more than 0.08; the anode material is prepared by combining gel and lithium peroxide under high-temperature heat treatment; the process is simple and the preparation course is easy to be controlled. The first discharge capacity of the material can reach 140mAh / g<-1>, wherein, 5V voltage platform characteristic is obviously improved, and 4V voltage platform is well removed, the charge and discharge efficiency reach more than 96% after repeating the previous cycles, and the material has excellent cycle performance.

The invention relates to a solid waste treatment device with a filtering structure for easy maintenance, comprising a main body, a driving motor and a cover plate, a separation cylinder is fixed on the inner wall of the main body, and a fixing frame is connected to the bottom of the separation cylinder, and the separation cylinder is connected to the bottom of the separation cylinder The fixed frames are connected by screws, the driving motor is installed on the inside of the fixed frame, and the fixed frame and the driving motor are connected flexibly. There is a screw connection between the cover plate and the drive motor, and a fixed connection between the cover plate and the bellows, and an incineration bucket is installed under the cover plate. The beneficial effects of the present invention are: the solid waste treatment device with a filter structure for easy maintenance is provided with a filter box, which can filter the harmful gas generated during the operation of the device, avoiding environmental pollution caused by direct discharge, thereby improving Safety of device operation.

The invention relates to a preparation method for synthesizing a lithium battery cathode material through a solvent-free solid-phase method. The method comprises the following steps that solid-state high-hydrocarbon fatty acid and / or solid-state high-hydrocarbon fatty acid salt and flake graphite are mixed evenly to obtain a multifunctional auxiliary; the multifunctional auxiliary and raw materials are added into mixing equipment together to prepare a precursor; high-temperature sintering is performed on the precursor after heat treatment is performed on the precursor, and then the lithium battery cathode material is obtained. According to the method, by adding the multifunctional auxiliary of which the main components comprise the solid-state high-hydrocarbon fatty acid and / or the solid-state high-hydrocarbon fatty acid salt in the mixing stage, the problem that diversified scattering of the raw materials is difficult is solved through the lubrication action of high-hydrocarbon fatty acid radicals, metal ions carried by the high-hydrocarbon fatty acid salt can also be evenly dispersed in the precursor in the mixing process to serve as a doping ion source in body doping, and the high-hydrocarbon fatty acid radicals can be decomposed at high temperature to generate gas, so that the fluffy degree of the precursor is increased and hardening is relieved; therefore, generation of oxygen vacancy is reduced in the sintering process, and the prepared lithium battery cathode material has the advantages of being few in defect, excellent in electrochemical performance and the like.