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A proton-exchange film fuel battery electrocatalyst and its preparing and application

A proton exchange membrane, fuel cell technology, applied in catalyst activation/preparation, battery electrodes, physical/chemical process catalysts, etc., can solve the problems of high Pt price, lack of resources, poisoning, etc., and achieve low price, abundant resources, and preparation. simple craftsmanship

Inactive Publication Date: 2007-05-23
SUNRISE POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used catalyst is the noble metal Pt as the main body. Due to the high price of Pt and the lack of resources, and the fuel usually contains a small amount of CO gas to "poison" the Pt catalyst, it has become a major obstacle to the commercialization of fuel cells.

Method used

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  • A proton-exchange film fuel battery electrocatalyst and its preparing and application
  • A proton-exchange film fuel battery electrocatalyst and its preparing and application
  • A proton-exchange film fuel battery electrocatalyst and its preparing and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 0.83ml of ammonium molybdate aqueous solution with a concentration of 133.6mgMo / ml, add appropriate amount of water and isopropanol and ultrasonically mix it evenly, then add it to 0.5g Vulcan XC-72, stir for half an hour to mix evenly, and soak it for 12h. The above mixture was slowly evaporated on a water bath at 90°C until the surface was dry, and then dried in a vacuum oven at 120°C for 2 hours; then the sample was moved into a tube furnace for sintering and nitriding. The roasting condition is N 2 In the atmosphere, the temperature was raised to 500°C at a constant temperature of 5°C / min for 2 hours, and then lowered to room temperature. Then pass 60ml / min of NH 3 Raise the temperature from room temperature to 623K at 5K / min; then raise the temperature from 623K to 723K at a speed of 0.5K / min, and then raise the temperature from 723K to 973K at 2.5K / min, then keep the temperature at 973K for 2 hours, and then lower it to room temperature to prepare (18wt. %M...

Embodiment 2

[0033] Take 0.25ml of ammonium metatungstate aqueous solution with a concentration of 441.216mgW / ml, add 1.5ml of water and 0.3ml of isopropanol and ultrasonically mix it evenly, then add it into 0.5gXC-72, stir for half an hour to mix evenly, and soak it for 12h . The above mixture was slowly evaporated on a water bath at 90°C until the surface was dry, and then dried in a vacuum oven at 120°C for 12 hours; then the sample was moved into a tube furnace for sintering and nitriding. The roasting condition is N 2 In the atmosphere, the temperature was raised to 500°C at a constant temperature of 5°C / min for 2 hours, and then lowered to room temperature. Then pass 60ml / min of NH 3 Raise the temperature from room temperature to 623K at 5K / min; then raise the temperature from 623K to 723K at a speed of 0.5K / min, and then raise the temperature from 723K to 1025K at 2.5K / min, then keep the temperature at 1025K for 2 hours, and then lower it to room temperature to prepare (18wt. %W...

Embodiment 3

[0036] The precursor oxide of supported cobalt molybdenum nitride is impregnated: 0.59ml of Co(NO with a concentration of 134.4mgCo / ml 3 ) 2 ·6H 2 O aqueous solution was slowly added to 0.96ml of ammonium molybdate aqueous solution with a concentration of 133.6mgMo / ml, and the mixed solution was immersed in 0.5g of XC-72, stirred for half an hour to mix evenly, and immersed for 12 hours. The above mixture was slowly evaporated on a water bath at 90°C until the surface was dry, and then dried in a vacuum oven at 120°C for 12 hours; then the sample was moved into a tube furnace for sintering and nitriding. The roasting condition is N 2 In the atmosphere, the temperature was raised to 500°C at a constant temperature of 5°C / min for 2 hours, and then lowered to room temperature. Then pass 60ml / min of NH 3 Raise the temperature from room temperature to 623K at 10K / min; then raise the temperature from 623K to 723K at a speed of 0.5K / min, then raise the temperature from 723K to 97...

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Abstract

The invention relates to an electric catalyst of proton exchange membrane fuel battery and relative production, wherein it uses one or several metal carbonates or nitrides of IIIb, IVb, Vb, VIb, VIIb, VII and Ib groups of the Periodic System, or the transition metal oxide MxOy as active components; the content of active component is 10-70% of catalyst content; the left is carrier; the active component contains at least one of nitrides of molybdenum and tungsten, while their total contents are 10-60% of catalyst. The inventive catalyst can represent better O2 reduction activity, and it can reduce the CO adsorption on Pt, and accelerate the CO oxidization on Pt.

Description

technical field [0001] The present invention relates to proton exchange membrane fuel cell catalyst, specifically a kind of proton exchange membrane fuel cell electrocatalyst and its preparation and application, is a supported multi-component catalyst based on transition metal molybdenum or tungsten nitride, The catalyst can be used not only as a cathode oxygen reduction catalyst of a proton exchange membrane fuel cell but also as an anode anti-CO catalyst. Background technique [0002] A fuel cell is a device that converts chemical energy directly into electrical energy without heat. It uses non-petroleum fuels such as hydrogen, natural gas, coal gas, and methanol to undergo oxidation-reduction reactions at the two poles of the battery with pure oxygen or air, and continuously provides direct current to the environment. Fuel cells are considered to be the fourth power generation technology that is promising to provide a large amount of electricity after thermal power, hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B01J37/00
CPCY02E60/50
Inventor 张华民钟和香刘刚梁永民田植群衣宝廉
Owner SUNRISE POWER CO LTD
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