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A kind of electrolytic preparation of agvo on ag substrate 3 thin film method

A substrate and film technology, applied in the direction of circuits, electrical components, battery electrodes, etc., can solve the problems of high contact resistance, affecting the electrochemical performance of electrode materials, active materials, conductive agents, and binders are difficult to mix evenly, to achieve electrical conductivity Good performance, improve the related electrochemical performance, and improve the effect of electrochemical performance

Active Publication Date: 2017-03-15
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the problem that it is difficult to mix the active material, conductive agent, binder, etc. uniformly, and the contact resistance between the active material and the current collector substrate is high, which affects the electrochemical performance of the electrode material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] (2)AgVO 3 Film preparation

[0020] Take a piece of conductive tape, one end sticks to the pretreated Ag substrate, the other end is connected to the anode of the digital potentiometer, the cathode of the digital potentiometer is connected to the platinum wire electrode, and the anode and cathode are placed in a 0.01-2mol / In a beaker in soluble ammonium metavanadate aqueous solution of L, set the voltage of the digital potentiometer at 0.02-2V, after electrolysis for 30-480min, take out the Ag substrate disk, wash with distilled water, and dry to obtain AgVO 3 film.

[0021] (3)AgVO 3 Firing of the film

[0022] The product prepared in step (2) is roasted at 300-650°C for 2-15 hours under the protection of an inert atmosphere to remove the adsorbed water and obtain AgVO with good crystallinity 3 film.

Embodiment 2

[0025] Select the soluble sodium metavanadate aqueous solution to replace the soluble ammonium metavanadate aqueous solution, and the others are the same as in Example 1.

Embodiment 3

[0027] The soluble potassium metavanadate aqueous solution was selected to replace the soluble ammonium metavanadate aqueous solution, and the others were the same as in Example 1.

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Abstract

The invention discloses a method for manufacturing AgVO<3> thin films on Ag substrates by means of electrolysis. The method is characterized in that conductive tapes are used as anodes, Ag sheets are adhered on the conductive tapes, platinum wire electrodes are used as cathodes, soluble metavanadate aqueous liquor is used as an electrolyte, and the anodes, the cathodes and the electrolyte carry out electrolytic reaction under certain voltage conditions. The method has the advantages that the synthesis method is simple, the conditions are mild, and the manufactured AgVO<3> thin films are uniform in morphology, stable in structure and good in conductivity and are promising thin film electrode materials.

Description

technical field [0001] The invention relates to a preparation method of a lithium ion battery electrode material, in particular to a method for electrolytically preparing AgVO on an Ag substrate. 3 thin film method. Background technique [0002] Lithium batteries, as a green energy source, have been used in portable electronic devices and electric vehicles. Although the energy density of lithium batteries is high, the low diffusion rate of lithium ions and electrons leads to poor rate characteristics and low power density. Poor magnification characteristics limit its further development in portable devices. Therefore, the study of high-capacity, high-rate, miniaturized, excellent cycle stability, and low-cost lithium batteries based on new nanostructures is one of the frontiers and hotspots of lithium battery research in the current low-carbon economy era. In 1987, Takeuchi and Piliero proposed to use silver vanadium oxide as the positive electrode material of lithium pri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/54H01M4/1391H01M10/0525
CPCH01M4/1391H01M4/54H01M10/0525Y02E60/10
Inventor 曾晖方建华
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY