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A kind of platinum catalyst for fuel cell electrode and preparation method thereof

A fuel cell electrode and platinum catalyst technology, which is applied in battery electrodes, circuits, electrical components, etc., can solve the problems of high cost and unsuitability for commercial production, and achieve good performance stability and low requirements for reaction conditions and equipment , The preparation method is simple and easy to implement

Active Publication Date: 2021-02-02
ANHUI ZHENGJIE HIGH TECH MATERIALS CO LTD BY SHARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it contains gold and is too expensive to be commercially produced

Method used

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preparation example Construction

[0023] The present invention relates to a kind of preparation method of platinum catalyst for fuel cell electrode, it is characterized in that, comprises the following steps:

[0024] Step S1, preparation of platinum-containing copolymers: platinum hexafluoroacetylacetonate (II), vinyltriethoxysilane, 1-allyl-3-methyl imidazole chloride, polyethylene glycol monoallyl Ether and initiator are added to the high-boiling point solvent, stirred and reacted for 3-5 hours under nitrogen or inert gas atmosphere at 70-80°C, and then the solvent is removed by rotary evaporation to obtain a platinum-containing copolymer;

[0025] Step S2, graphene loading: add the platinum-containing copolymer prepared in step S1 into the organic solvent dispersed with graphene, stir and react at 60-80°C for 4-8 hours, and then remove the organic solvent by rotary evaporation to obtain Graphene supported platinum-containing copolymer;

[0026] Step S3, ion exchange: immerse the graphene-loaded platinum-c...

Embodiment 1

[0036] This example provides a kind of preparation method of platinum catalyst for fuel cell electrode, it is characterized in that, comprises the steps:

[0037] Step S1, preparation of platinum-containing copolymers: platinum hexafluoroacetylacetonate (II), vinyltriethoxysilane, 1-allyl-3-methyl imidazole chloride, polyethylene glycol monoallyl Ether and azobisisobutyronitrile were added to dimethyl sulfoxide, stirred and reacted at 70°C in a nitrogen atmosphere for 3 hours, and then the solvent was removed by rotary evaporation to obtain a platinum-containing copolymer; the platinum (II) hexafluoroacetylacetonate, The mass ratio of vinyltriethoxysilane, 1-allyl-3-methylimidazole chloride, polyethylene glycol monoallyl ether, azobisisobutyronitrile, and dimethyl sulfoxide is 1:1 :0.1:0.6:0.02:10;

[0038]Step S2, graphene loading: add the platinum-containing copolymer prepared in step S1 to ethanol dispersed with graphene, stir and react at 60°C for 4 hours, and then remove...

Embodiment 2

[0043] Embodiment 2 provides a preparation method of a platinum catalyst for a fuel cell electrode, which is basically the same as in Embodiment 1, except that the platinum hexafluoroacetylacetonate (II), vinyltriethoxysilane, 1- The mass ratio of allyl-3-methylimidazole chloride, polyethylene glycol monoallyl ether, initiator, high boiling point solvent is 1:1:0.15:0.6:0.025:11; described in step S2 contains The mass ratio of platinum copolymer, graphene, and organic solvent is 1:0.05:6; the mass ratio of graphene-supported platinum-containing copolymer, chloroplatinic acid, chloropalladic acid, chlorocupric acid, and ethanol in step S3 is 1:0.01 :0.01:0.03:6; the mass ratio of intermediate product and sodium borohydride aqueous solution described in step S4 is 1:17.

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Abstract

The invention relates to a method for preparing a platinum catalyst for a fuel cell electrode, which is characterized in that it comprises the following steps: step S1, preparation of a platinum-containing copolymer; step S2, graphene loading: the platinum-containing copolymer prepared through step S1 The compound is added into an organic solvent dispersed in graphene, stirred and reacted at 60-80° C. for 4-8 hours, and then the organic solvent is removed by rotary evaporation to obtain a graphene-loaded platinum-containing copolymer; step S3, ion exchange; step S4, reduction. The invention also discloses the platinum catalyst for fuel cell electrodes prepared according to the preparation method of the platinum catalyst for fuel cell electrodes. The platinum catalyst for fuel cell electrodes disclosed by the invention has high catalytic efficiency, can effectively control catalyst poisoning, and has good performance stability.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a platinum catalyst for fuel cell electrodes and a preparation method thereof. Background technique [0002] In recent years, with the advancement of global industrialization, the available resources on the earth have become increasingly scarce. Therefore, new energy technologies that are reusable, environmentally friendly and have high energy conversion efficiency have become common goals pursued by industry and academia in various countries. It is in this situation that fuel cells emerged at the historic moment. Because of their low pollution and high energy conversion efficiency, they have become the most attention-grabbing new energy technology in recent years. [0003] A fuel cell is a clean energy conversion device that can directly convert chemical energy into electrical energy. It usually consists of electrodes, solid electrolyte diaphragms, and external circuits. Amon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/92
CPCH01M4/8825H01M4/921H01M4/926Y02E60/50
Inventor 王艳艳徐正华
Owner ANHUI ZHENGJIE HIGH TECH MATERIALS CO LTD BY SHARE
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