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

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 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 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 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.