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Fuel cell cathode multi-metal doped multi-element nonmetal oxygen reduction catalyst and preparation method thereof

A fuel cell cathode and non-metallic technology, applied in fuel cells, solid electrolyte fuel cells, battery electrodes, etc., can solve the problems of increasing the cost of PEFC catalysts

Pending Publication Date: 2021-03-19
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The catalysts used in PEFC are mainly Pt-based catalysts, and Pt as a rare metal greatly increases the cost of PEFC catalysts

Method used

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  • Fuel cell cathode multi-metal doped multi-element nonmetal oxygen reduction catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A fuel cell cathode multi-metal-doped multi-element non-metallic oxygen reduction catalyst is prepared according to the following steps:

[0044] (1) Weigh 0.1g of palladium chloride and 20ml (0.4g / ml) of filtered graphene oxide in the same beaker, and stir at room temperature for 30min;

[0045] (2) Add 0.1 g of nickel chloride hexahydrate, ferric chloride, cobalt nitrate hexahydrate, 0.2 g of amine hydrofluoride and 40 ml of ethylene glycol into the beaker. carry out magnetic stirring;

[0046] (3) Suction filtration and separation of the above dispersion to obtain a solid, and drying the solid at 80° C. for 3 hours;

[0047] (4) The sample was heated in a tube furnace at 500°C for 2 h in a mixed atmosphere of hydrogen and argon. After heat treatment, a multi-metal doped multi-element non-metal oxygen reduction catalyst was obtained.

Embodiment 2

[0049] A fuel cell cathode multi-metal-doped multi-element non-metallic oxygen reduction catalyst, similar to Example 1, prepared according to the following steps:

[0050] (1) Weigh 0.5g of palladium chloride and 40ml (0.4g / ml) of filtered graphene oxide in the same beaker, and stir at room temperature for 30min;

[0051] (2) Add 0.5 g of nickel chloride hexahydrate, ferric chloride, cobalt nitrate hexahydrate, 0.3 g of amine hydrofluoride and 40 ml of ethylene glycol into the beaker. carry out magnetic stirring;

[0052] (3) After diluting and filtering the solution in deionized water, dry it at 80°C for 3 hours;

[0053] (4) Heat the sample in a tube furnace at 500°C for 2 h in a mixed atmosphere of hydrogen and argon to obtain the final sample.

Embodiment 3

[0055] A fuel cell cathode multi-metal-doped multi-element non-metallic oxygen reduction catalyst, similar to Example 1, prepared according to the following steps:

[0056](1) Weigh 0.3g of palladium chloride and 40ml (0.4g / ml) of filtered graphene oxide in the same beaker, and stir at room temperature for 30min;

[0057] (2) Add 0.3g of nickel chloride hexahydrate, ferric chloride, cobalt nitrate hexahydrate, 0.6g of amine hydrofluoride and 40ml of ethylene glycol into the beaker. carry out magnetic stirring;

[0058] (3) After diluting and filtering the solution in deionized water, dry it at 80°C for 3 hours;

[0059] (4) Heat the sample in a tube furnace at 500°C for 2 h in a mixed atmosphere of hydrogen and argon to obtain the final sample.

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Abstract

The invention discloses a fuel cell cathode multi-metal doped multi-element nonmetal oxygen reduction catalyst and a preparation method thereof, and the multi-metal and N, F composite doped carbon carrier enhances the conductivity and specific surface area, and is in favor of promoting the electron transfer process in the oxygen reduction reaction process; operation is simple, the half-wave potential value of the prepared oxygen reduction catalyst is relatively high, and activity of the catalyst is relatively high.

Description

technical field [0001] The invention relates to a fuel cell cathode multi-metal doped multi-element non-metal oxygen reduction catalyst and a preparation method thereof. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy. It has high energy conversion efficiency, a wide range of fuel choices, clean, less pollution, low noise, high specific energy, strong reliability, and fast load response. , has received widespread attention due to its advantages such as super adaptability, and the polymer electrolyte fuel cell (PEFC), as one of the representatives of fuel cells, has also received increasing attention. [0003] The catalysts used in PEFC are mainly Pt-based catalysts, and Pt, as a rare metal, greatly increases the cost of PEFC catalysts. Therefore, the main work to promote the commercial application of PEFC focuses on reducing the Pt loading and improving the catalytic activity of Pt-base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M8/10B82Y40/00B82Y30/00
CPCH01M4/926H01M8/10B82Y40/00B82Y30/00H01M2008/1095Y02E60/50
Inventor 崔大祥李梦飞刘鹏飞周霖李天昊葛美英张芳
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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