Metal-based carbon fiber loaded catalyst carrier for fuel cell and preparation method

A catalyst carrier and fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as difficult to effectively solve CO adsorption and limited adsorption performance, achieve excellent electrocatalytic performance, and the preparation method is environmentally friendly and reduces harmful gases The effect of content

Active Publication Date: 2018-06-01
赤壁市高质量发展研究院(湖北省赤壁产业技术研究院)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the fact that most of the traditional catalyst carriers use activated carbon, the adsorption performance is limited and it is difficult to effectively solve the p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Activated carbon fiber: heat the carbon fiber to 1100°C in a muffle furnace, pass in 25% water vapor, treat for 4 hours, and naturally cool to room temperature to obtain surface activated carbon fiber;

[0034] (2) Soak the surface-activated carbon fiber in CuSO 4 and PdCl 2 In the mixed aqueous solution, the concentration of the mixed aqueous solution of the divalent copper ion compound and the divalent palladium ion compound is 8000ppm, the mass ratio of the surface activated carbon fiber and the solution is 1 / 30 when the surface activated carbon fiber is soaked, the power of the ultrasonic vibration is 3kW, and the ultrasonic vibration adsorption After 24 hours, the solution was filtered off, the drying temperature was 400°C, and the metal ion composite carbon fiber was obtained by drying;

[0035] (3) The metal ion composite activated carbon fiber was treated in 5% argon-hydrogen gas at 120°C for 3 hours to prepare a metal-based activated carbon fiber catalytic...

Embodiment 2

[0039] (1) Activated carbon fiber: heat the carbon fiber to 900°C in a muffle furnace, pass in 28% water vapor, treat for 3 hours, and naturally cool to room temperature to obtain surface activated carbon fiber;

[0040] (2) Soak the surface-activated carbon fiber in Cu(NO 3 ) 2 and H 2 PdCl 4 In the mixed aqueous solution, the concentration of the mixed aqueous solution of the divalent copper ion compound and the divalent palladium ion compound is 8000ppm, the mass ratio of the surface activated carbon fiber and the solution is 1 / 80 when the surface activated carbon fiber is soaked, the power of the ultrasonic vibration is 8kW, and the ultrasonic vibration adsorption After 15 hours, the solution was filtered off, the drying temperature was 360°C, and the metal ion composite carbon fiber was obtained by drying;

[0041] (3) The metal ion-composite activated carbon fiber was treated in a reducing atmosphere of hydrogen and kept at 100°C for 4 hours to prepare a metal-based a...

Embodiment 3

[0045] (1) Activated carbon fiber: heat the carbon fiber to 1000°C in a muffle furnace, pass in 28% water vapor, treat for 4 hours, and naturally cool to room temperature to obtain surface activated carbon fiber;

[0046] (2) Soak the surface activated carbon fiber in CuCl 2 and Na 2 PdCl 4 In the mixed aqueous solution, the concentration of the mixed aqueous solution of the divalent copper ion compound and the divalent palladium ion compound is 1600ppm, the mass ratio of the surface activated carbon fiber and the solution is 1 / 150 when the surface activated carbon fiber is soaked, the power of the ultrasonic vibration is 7kW, and the ultrasonic vibration adsorption After 15 hours, the solution was filtered off, the drying temperature was 380°C, and the metal ion composite carbon fiber was obtained by drying;

[0047] (3) The metal ion-composite activated carbon fiber was subjected to heat preservation treatment at 120°C for 3 hours in ammonia gas to prepare a copper / palladi...

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Abstract

The invention provides a metal-based carbon fiber loaded catalyst carrier for a fuel cell and a preparation method. Active carbon fiber is dipped in a copper source and palladium source solution, anddried after ultrasonic concussion is conducted for 24 hours, after that, active carbon fiber is subjected to heat preservation in a reducing atmosphere for 3-4 hours, the heat preservation temperatureis 100-120 DEG C, and metal-based active carbon fiber compositely loading copper/palladium is obtained. The metal-based carbon fiber prepared by the invention serves as a catalyst carrier and can preferentially adsorb microscale gases such as carbon monoxide, nitric oxide and sulfur dioxide which have a great influence on the catalyst, the activity of a Pt catalyst is improved, the capability ofadsorbing gases such as CO and NO is high, the risk of Pt catalyst poisoning can be reduced, the problems that most of traditional catalyst carriers adopt active carbon, the adsorption capability is limited, and the adsorption problem of CO is difficult to solve are effectively solved, and in addition, the catalyst carrier has the characteristics of being low in weight, easy to form and good in toughness.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a metal-based carbon fiber catalyst carrier for fuel cells and a preparation method thereof. Background technique [0002] Proton Exchange Membrane Fuel Cell (PEMFC) uses a solid-state electrolyte polymer membrane as the electrolyte, which has a high theoretical energy conversion rate (below 200°C, the efficiency can reach 80%), and the actual efficiency is higher than that of ordinary internal combustion engines. 2~3 times, the fuel used is hydrogen-rich substances such as hydrogen, methanol and hydrocarbons, which has the characteristics of small size, fast start-up, high energy conversion rate, low-temperature start-up, no electrolyte leakage, etc., and has little environmental pollution and almost no emissions Nitrogen or sulfur oxides, CO 2 The emissions are also more than 40% less than conventional power plants, and it is recognized as the most promising power source fo...

Claims

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Application Information

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IPC IPC(8): H01M4/92
CPCH01M4/921H01M4/926Y02E60/50
Inventor 陈庆廖健淞
Owner 赤壁市高质量发展研究院(湖北省赤壁产业技术研究院)
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