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Anti-reverse-pole catalyst for fuel cell and preparation method of anti-reverse-pole catalyst

A fuel cell and catalyst technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as membrane electrode damage

Inactive Publication Date: 2021-11-26
武汉绿知行环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in actual working conditions, the reverse pole phenomenon caused by frequent load changes of the fuel cell will cause fatal damage to the membrane electrode

Method used

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  • Anti-reverse-pole catalyst for fuel cell and preparation method of anti-reverse-pole catalyst
  • Anti-reverse-pole catalyst for fuel cell and preparation method of anti-reverse-pole catalyst
  • Anti-reverse-pole catalyst for fuel cell and preparation method of anti-reverse-pole catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 1g of porous carbon black and place it in a tube furnace, and heat it from normal temperature to 950°C at a heating rate of 2°C / min, and keep it warm for 3 hours. After natural cooling, replace with nitrogen gas and seal for use. Disperse the ammonia-treated carrier material in 800 ml of ethylene glycol solution, and then fully disperse it by means of a high-speed cutting machine and ultrasonic charging. Thereafter 2.5 g of nickel acetate, 10 g of polyvinylpyrrolidone and 10 g of ammonium citrate were added, after which the pH was adjusted to 12 with sodium hydroxide. After thorough cutting and sonication, heating was carried out by microwave at 180 degrees for 10 minutes. After the reaction, the temperature was lowered to 80 degrees for later use. For product-related test results, see figure 1 , figure 2 and image 3 .

[0026] In addition, weigh 1 gram of chloroplatinic acid and 200 mg of ruthenium chloride, disperse it in 500 mL of ethylene glycol, add 5 ...

Embodiment 2

[0028] Weigh 1g of porous carbon black and place it in a tube furnace, and heat it from normal temperature to 950°C at a heating rate of 2°C / min, and keep it warm for 3 hours. After natural cooling, replace with nitrogen gas and seal for use. Disperse the ammonia-treated carrier material in 800 ml of nitrogen, nitrogen-dimethylformamide solution, and then fully disperse it by means of a high-speed cutting machine and ultrasonic charging. Thereafter 2.5 g of nickel acetate, 15 g of polyvinylpyrrolidone were added, and then the pH was adjusted to 12 with sodium hydroxide. After thorough cutting and sonication, heating was carried out by microwave at 180° C. for 10 minutes. After the reaction, the temperature was lowered to 80 degrees for later use.

[0029] In addition, 1 gram of chloroplatinic acid was weighed and dispersed in 500 mL of ethylene glycol. After fully dispersed by adding 5 grams of ammonium citrate and 5 grams of potassium iodide, it was added dropwise to the abo...

Embodiment 3

[0031] Weigh 1g of porous carbon black and place it in a tube furnace, and heat it from normal temperature to 950°C at a heating rate of 2°C / min, and keep it warm for 3 hours. After natural cooling, replace with nitrogen gas and seal for use. Disperse the ammonia-treated carrier material in 400 ml of ethylene glycol solution, and then fully disperse it by means of a high-speed cutting machine and ultrasonic charging. Thereafter, 1.82 g of cobalt nitrate and 10 g of ammonium citrate were added, and then the pH was adjusted to 12 with sodium hydroxide. After sufficient cutting and sonication, the reaction kettle was heated at 180 degrees to maintain a constant temperature, and 50 ml of 3 % formaldehyde solution. After 3 hours of reaction, the temperature was lowered to 80°C for use.

[0032] In addition, 1 gram of platinum acetylacetonate and 100 mg of chloroauric acid were weighed, dispersed in 100 mL of ethylene glycol, 10 potassium iodide was added, and after being fully disp...

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Abstract

The invention discloses an anti-antipolar catalyst for a fuel cell and a preparation method of the anti-antipolar catalyst. The catalyst is a supported platinum-based catalyst which takes precious metal platinum as a main active element, takes other metals such as iron, cobalt, nickel, copper, tin, bismuth, manganese, tungsten, yttrium, palladium, rhodium, ruthenium (or) and iridium as regulation and control components, and takes a corrosion-resistant porous nano conductive material as a carrier. The catalyst has very excellent catalytic activity, stability, toxicity resistance and antipolar capacity, and has the advantages of low platinum content, high utilization rate, low total cost and the like. The catalyst is obtained through multi-step reduction and chemical replacement, and the target catalyst is obtained through synthesis of a nanoparticle core of common metal and then chemical replacement and further reduction. The preparation method is stable, reliable, convenient to expand and low in cost.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to an anti-anti-reverse catalyst for fuel cells and a preparation method thereof. The invention is also applicable to nano material and its preparation, metal-air battery or various membrane electrolytic cells. Background technique [0002] The revolution of energy and power has led to the rapid development of fuel cell technology. As a clean energy conversion technology, fuel cell has high efficiency, high specific power, clean and environmental protection, etc., so it is considered as the fourth power generation method. As the core material of fuel cells, the problems of platinum-based catalysts have restricted the development of fuel cells for a long time. Specifically, due to the scarcity of platinum, the cost of platinum-based catalysts is high, so reducing the content of platinum and improving the utilization rate of platinum is an inevitable path in the field of fuel cells. CN2006...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M4/88
CPCH01M4/921H01M4/925H01M4/926H01M4/8878Y02E60/50
Inventor 熊鑫余金礼丁俊杰
Owner 武汉绿知行环保科技有限公司
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