Preparation method of PEMFC Pt-Ru/c catalyst

A proton exchange membrane, fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as difficult control of component distribution ratio, and achieve the effects of short preparation time and easy operation

Inactive Publication Date: 2012-09-26
SHANTOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This result can control the particle size well, but the component distribution ratio is still difficult to control

Method used

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  • Preparation method of PEMFC Pt-Ru/c catalyst
  • Preparation method of PEMFC Pt-Ru/c catalyst
  • Preparation method of PEMFC Pt-Ru/c catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 0.2 grams of carbon carrier and place it in a flask filled with 10ml of sulfuric acid, heat it while stirring, and reflux the sulfuric acid. After 6-12 hours of treatment, filter and wash the carrier until it is neutral, and dry it for later use; configure a concentration of 20mmol / L Ruthenium chloride solution, 5ml of chloroplatinic acid solution with a concentration of 20mmol / L; 30ml of isopropanol, 25ml of cyclohexane, and 10ml of surfactant triton-100 were mixed and stirred for 30 minutes to form a transparent microemulsion system, and 20mmol / L was added 5 ml of ruthenium chloride of 1 L, and a small amount of n-butanol was added dropwise, placed in a microwave oven for intermittent microwave treatment (the total power of the microwave oven was 800w) after mixing evenly, utilized 10% power to heat for 20 seconds, heated four times, and then used 30 % power heating for 10 seconds, heating three times, every two heating intervals of 15 seconds, stirring; observe t...

Embodiment 2

[0023] Take 0.2 grams of carbon carrier and place it in a flask filled with 10ml of sulfuric acid, heat it while stirring, and reflux the nitric acid. After 6-12 hours of treatment, filter and wash the carrier until it is neutral, and dry it for later use; configure the concentration of 20mmol / L Ruthenium chloride solution, concentration are each 5ml of the chloroplatinic acid solution of 20mmol / L; With 40ml n-heptane, 0.35gCTAB (hexadecyltrimethylammonium bromide), mix and stir 30 minutes to form transparent microemulsion system, add Ruthenium chloride 5ml of 20mmol / L, and a small amount of n-butanol is added dropwise, is placed in the microwave oven after mixing uniformly and carries out intermittent microwave treatment (microwave oven total power is 800w), utilizes 10% power to heat 20 seconds, heats four times, again Heat at 30% power for 10 seconds, three times, stirring for fifteen seconds in between. It was observed that the microemulsion changed from light gray to ligh...

Embodiment 3

[0025] Take 0.2 grams of carbon carrier and place it in a flask filled with 10ml of sulfuric acid, heat it while stirring, and reflux the nitric acid. After 6-12 hours of treatment, filter and wash the carrier until it is neutral, and dry it for later use; configure the concentration of 20mmol / L Ruthenium chloride solution, 10ml of chloroplatinic acid solution with a concentration of 20mmol / L; 40ml of n-heptane and 10ml of surfactant triton-100 were mixed and stirred for 30 minutes to form a transparent microemulsion system, and 20mmol / L of ruthenium chloride was added 1ml, and a small amount of n-butanol was added dropwise, mixed evenly, placed in a microwave oven for intermittent microwave treatment (the total power of the microwave oven was 800w), heated for 20 seconds with 10% power, heated four times, and then heated with 30% power for 10 seconds, heat three times, stirring for fifteen seconds in between. It was observed that the microemulsion changed from light gray to l...

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Abstract

The invention provides a preparation method of PEMFC Pt-Ru / c catalyst. Carbon carrier is pretreated and activated with sulphuric acid, nitric acid or hydrogen peroxide for standby. Chloroplatinic acid, ruthenium chloride and organic solvent mixed liquor are mixed, to which the pretreated carbon carrier is added. After intermittent microwave processing, filtering, cleaning and drying in vacuum, the Pt-Ru / c catalyst can be obtained. The invention can control the particle size and the component proportion of the catalyst accurately and the operation is simple.

Description

technical field [0001] The invention relates to the technical fields of electrocatalysis and energy, in particular to a method for preparing a Pt-Ru / C catalyst for a proton exchange membrane fuel cell. Background technique [0002] Fuel cells generate electricity directly through the chemical reaction of a fuel (such as natural gas, methanol, or pure hydrogen) between two electrodes separated by an electrolyte. The power generation efficiency of fuel cells can reach 45% to 60%. In addition to emitting a low ratio of carbon oxides, it has almost no other harmful emissions, has little environmental pollution, and has low temperature requirements. It is a clean and environmentally friendly new energy power generation system. At present, countries have invested huge sums of money in the research of fuel cells. Catalyst is one of the key materials of fuel cell, and the performance of catalyst directly affects the performance of fuel cell. Therefore, Pt / C catalysts, especially...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/90H01M4/96
CPCY02E60/50
Inventor 张歆苏晓晴孟艺飞袁燕森魏广科陈乐伍林本瑜
Owner SHANTOU UNIV
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