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Graphene modified fuel battery cathode catalyst material and preparation method thereof

A graphene modification, fuel cell technology, applied in battery electrodes, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as high price and limited platinum precious metal resources

Active Publication Date: 2014-03-26
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the electrocatalytic materials are mainly noble metal-based catalysts such as platinum, but platinum noble metal resources are limited and expensive

Method used

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  • Graphene modified fuel battery cathode catalyst material and preparation method thereof
  • Graphene modified fuel battery cathode catalyst material and preparation method thereof
  • Graphene modified fuel battery cathode catalyst material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] 1. Preparation of PANI-Fe-Ni / C with carbon black as carrier

[0025] Carbon Black Pretreatment

[0026] Prepare 0.5mol / L HCl solution: Take 8.67ml of 36% HCl solution, add appropriate amount of water to dissolve, transfer to a volumetric flask, calibrate to 100ml, shake well, let stand, and set aside. A certain amount of carbon black was weighed and added to HCl solution, soaked for 24 hours, filtered, dried, and set aside.

[0027] 1) Synthesis of EDA-Ni complex

[0028] Take 19.9110g (0.08mol) of nickel acetate, dissolve it with an appropriate amount of absolute ethanol, then add 6.0134g (0.1mol) of ethylenediamine, shake well to dissolve it. Heating to reflux, reflux time 4h. After cooling, it was allowed to stand for stratification to obtain a blue suspension. The solution was filtered, and the filtrate was blue viscous and dried (80°C) to obtain 7.354g. Anhydrous ethanol, recrystallization, filtration, and drying yielded 5.2670 g (EDA-Ni complex).

[0029] 2....

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Abstract

The invention provides a graphene modified fuel battery cathode catalyst material and a preparation method of the graphene modified fuel battery cathode catalyst material, applied to the field of a fuel battery electric catalyst. The preparation method is characterized by comprising the following steps of dispersing the graphene which is used for substituting the graphite in polyaniline-iron-nickel composite catalyst to be used as a carrier; adding nickel acetate and ethylenediamine in ethyl alcohol for reaction, then mixing with the graphene, roasting a mixture in the nitrogen at the temperature of 700DEG C to obtain a precursor A, adding the polyaniline and ferric nitrate according to a molar ratio of 4: 1 into the ethyl alcohol for reaction, and then mixing a mixture with the precursor A according to a given ratio to obtain a precursor B1; adding the polyaniline and nickel acetate according to a molar ratio of 4:1 in the ethyl alcohol for reaction, and then mixing a mixture with the graphene of a given quantity to obtain a precursor B2; mixing the precursor B1 and the precursor B2 according to a mass ratio of 4:1, and roasting the mixture in the nitrogen at the temperature of 700DEG C to obtain the polyaniline-iron-nickel-graphene composite electric catalyst C powder; dissolving the prepared catalyst C in 0.5mol sulfuric acid solution, and heating the mixed solution at a constant temperature of 80DEG C to obtain the composite electric catalyst product M.

Description

technical field [0001] The present invention relates to a graphene-modified polyaniline-nickel-iron composite catalyst material and a preparation method thereof, further to a graphene-modified polyaniline-nickel-iron composite catalyst material, which belongs to the proton exchange membrane fuel Technical field of battery electrocatalyst materials. Background technique [0002] Graphene (Gr for short) has become a research hotspot in the field of energy storage materials due to its excellent electrical, mechanical and thermal properties. Through surface modification, graphene-based materials can have good power characteristics, high energy density and good electrochemical stability. The aniline monomer and graphene are dissolved in hydrochloric acid, and the polyaniline-graphene composite material can be prepared by in-situ oxidative polymerization. When the current density of the obtained material is 0.1A / g, the permittivity can reach 300-500F / g[ J. Power Sour., 2011, 196...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92B01J31/06
CPCY02E60/50H01M4/9008H01M4/9041H01M4/9083
Inventor 鲁伊恒马双春魏风刘伟龙冯文权陈颖李寒旭陈明强
Owner ANHUI UNIV OF SCI & TECH