A kind of preparation method of graphite-coated paper loading niau film electrode material

A thin-film electrode and graphite technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor anode activity of sodium borohydride fuel cells, etc., and achieve the effects of abundant reserves, stable performance, and high electrocatalytic activity

Active Publication Date: 2015-12-09
HEILONGJIANG HACHUAN CARBON MATERIAL TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of preparation method that can improve the catalytic performance of direct borohydride fuel cell anode, solve the problem of poor activity of sodium borohydride fuel cell anode, graphite coated paper loaded NiAu thin film electrode material

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0018] In order to better illustrate the effect of the process of the present invention, specific examples are used below to illustrate.

[0019] (1) Take a piece of ordinary paper, use clay as a curing agent and mix it evenly with graphite, and then coat it on the surface of the paper, take 1×1cm -2 As a research electrode; (2) 5gNH 4 Cl and 1gNiCl 2 Dissolved in 50mL water, used for Ni electrodeposition by constant potential method. (3) Keep the graphite-coated paper at a voltage of 1.0V for 20-30min to activate the coated graphite, and then electrodeposit Ni at -1.0V for 160-180min to obtain a paper-graphite-Ni film electrode. (4) Finally, put the paper-graphite-Ni film electrode in 1mmolL -1 HAuClO 4 Stand in the solution for 2 to 4 minutes to obtain a paper-graphite-NiAu film electrode, that is, a graphite-coated paper-loaded NiAu catalyst.

[0020] The paper-graphite-NiAu thin film electrode was tested as follows:

[0021] 1. Using paper-graphite-NiAu thin film as ...

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Abstract

The invention provides a preparing method of a film electrode material using graphite coated paper to load NiAu. Clay is used as a curing agent, the clay and graphite are mixed evenly, then the surface of ordinary paper is coated with the evenly-mixed clay and graphite; 5-5.5g of NH4Cl and 1-1.5g of NiCl2 are dissolved in 50mL of water for preparing an electro-deposition solution; the paper coated with the graphite is maintained in the electro-deposition solution under 1.0V voltage for 20-30min for activation of the coated graphite, then a paper-graphite-Ni film electrode is obtained by 160-180min of electro-deposition of Ni under-1.0 V voltage; the paper-graphite-Ni film electrode is stood in a 1mmol L<-1> HAuClO4 solution for 2 to 4 minutes to obtain a paper-graphite-NiAu film electrode. According to the method, the graphite coated paper the is used, Ni is electrically deposited on the surface of the conductive graphite coated paper, then part of Ni is replaced with Au to prepare a NiAu-loading pencil coated paper catalyst, and the catalytic performance of the positive pole of a direct hydronoron fuel cell can be improved. The problem of poor activity the positive pole of a sodium borohydride fuel cell can be solved.

Description

technical field [0001] The invention relates to a method for preparing a thin film electrode material, in particular to a method for loading NiAu with graphite-coated paper to catalyze the electro-oxidation performance of borohydride. Background technique [0002] Direct sodium borohydride fuel cell (DBFC) is based on NaBH dissolved in alkaline electrolyte solution 4 Fuel cells that directly serve as fuel. Sodium borohydride is a hydrogen storage material with a high hydrogen content (11wt.% for solids and 7.4wt.% for saturated sodium borohydride solutions). Sodium borohydride has a larger volume of hydrogen storage capacity than compressed hydrogen and liquefied hydrogen. NaBH 4 The oxidation kinetics is faster than methanol, and the energy density and battery voltage are also better than methanol. NaBH 4 Non-flammable, low toxicity, no pollution, no CO generation 2 , only weakly corrosive, so the device is simple, small in size, convenient for storage and transportat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90
CPCY02E60/50H01M4/9075
Inventor 王贵领张栋铭潘越曹殿学徐阳闫鹏
Owner HEILONGJIANG HACHUAN CARBON MATERIAL TECH CO LTD
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