Unlock instant, AI-driven research and patent intelligence for your innovation.

A fuel cell electrode assisted by thermocatalysis and its preparation method and application

A fuel cell electrode and auxiliary electrode technology, which is applied in the direction of fuel cells, battery electrodes, solid electrolyte fuel cells, etc., can solve the problems of slow kinetics of biocatalysis process, low maximum power density of discharge performance, and impossibility of practical application. It is conducive to full exposure, enhanced physical and chemical activity, and strong practicability

Active Publication Date: 2021-06-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the key technical challenge it still faces is that the kinetics of the biocatalytic process is extremely slow, and the discharge performance of a single cell of a biofuel cell is 5 to 6 orders of magnitude lower than the highest power density of a polymer electrolyte membrane fuel cell, which is almost impossible to achieve practical application. It is even more difficult to realize the application value of defense equipment power supplies with high specific energy and high specific power requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A fuel cell electrode assisted by thermocatalysis and its preparation method and application
  • A fuel cell electrode assisted by thermocatalysis and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] a, Fabrication of thermocatalytic auxiliary electrode components

[0034] Disperse phosphotungstic acid and polybenzimidazole powder materials in a dimethylformamide solution at a mass ratio of 5:1, with a mass percentage concentration of 10%, and fully ultrasonically stir for 2 hours at 80 degrees Celsius; Add the mixed slurry to 85% concentrated phosphoric acid with twice the mass concentration, and stir at 150 degrees Celsius for 2 hours to fully volatilize the volatile solvent; impregnate the above mixed slurry in carbon paper to make the catalyst loading 5mg / cm 2 spare.

[0035] b, Preparation of fuel cell electrode components

[0036] Disperse a certain mass of carbon-supported platinum in a dimethylformamide solvent with a mass percentage concentration of 30 mg / ml, then add polybenzimidazole powder accounting for 20% by mass of the electrocatalyst, and stir at 80 degrees Celsius for 2 hours , so that it is fully dissolved, and then ultrasonically dispersed for ...

Embodiment 2

[0058] a, Fabrication of thermocatalytic auxiliary electrode components

[0059] Disperse phosphomolybdic acid and polybenzimidazole powder materials in a dimethylformamide solution at a mass ratio of 1:1, with a mass percentage concentration of 20%, and fully ultrasonically stir for 8 hours at room temperature; the above Add the mixed slurry to 5 times the mass concentration of 85% concentrated phosphoric acid, and stir at 200 degrees Celsius for 2 hours to fully volatilize the volatile solvent in it; impregnate the above mixed slurry in carbon felt to make the catalyst loading 10mg / cm 2 spare.

[0060] b, Preparation of fuel cell electrode components

[0061] Disperse a certain mass of platinum ruthenium black in a dimethylacetamide solvent with a mass percent concentration of 100 mg / ml, then add polybenzimidazole powder accounting for 50% of the mass ratio of the electrocatalyst, and stir at room temperature for 8 hour, so that it is fully dissolved, and then ultrasonical...

Embodiment 3

[0065] a, Fabrication of thermocatalytic auxiliary electrode components

[0066] Disperse phosphovanadic acid and polybenzimidazole powder materials in a dimethylformamide solution at a mass ratio of 1:1, with a mass percentage concentration of 20%, and fully ultrasonically stir for 8 hours at room temperature; the above Add the mixed slurry to 5 times the mass concentration of 85% concentrated phosphoric acid, and stir at 200 degrees Celsius for 2 hours to fully volatilize the volatile solvent therein; impregnate the above mixed slurry in porous graphite to make the catalyst loading 10mg / cm 2 spare.

[0067] b, Preparation of fuel cell electrode components

[0068] Disperse a certain mass of carbon-supported platinum-tin alloy in a dimethylacetamide solvent with a mass percentage concentration of 100 mg / ml, then add polybenzimidazole powder accounting for 50% of the mass ratio of the electrocatalyst. Stir for 8 hours to make it fully dissolve, then ultrasonically disperse f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a fuel cell electrode assisted by thermocatalysis, which is formed by laminating a porous substrate impregnated with a porous base layer, a porous substrate coated with an electrocatalyst on one side, and a polybenzimidazole film impregnated with phosphoric acid, and a porous substrate coated with an electrocatalyst on the surface One side of the substrate faces the side of the polybenzimidazole film; the impregnated materials in the porous substrate in the impregnated porous substrate layer are catalytic materials with strong catalytic oxidation properties, polybenzimidazole powder materials and phosphoric acid. The electrode has the advantages of high fuel selection range, high energy conversion efficiency, low material cost, etc., and can be widely used in portable power sources, power sources, stationary power stations and other fields.

Description

technical field [0001] The invention relates to a fuel cell electrode assisted by thermal catalysis, in particular to a bifunctional electrode coupled with thermal catalysis and fuel cell electrocatalysis. [0002] The present invention also relates to a method for preparing the above-mentioned fuel cell electrode assisted by thermocatalysis. Background technique [0003] With the development of civilian wearable electronic devices, electric vehicles and military high-power laser weapons, it is difficult for a single power source to meet the demand. Biomass and fossil fuels from a wide range of sources can be used to generate electricity, and at the same time, it can discharge stably for a long time and instantaneous high current Discharged composite power will become a development trend. [0004] Fuel cell technology based on variable fuel usually adopts the following different technical routes. First, the high-temperature fuel reforming hydrogen production technology is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/88H01M4/90H01M4/92H01M8/12
CPCH01M4/8652H01M4/8896H01M4/9008H01M4/926H01M8/12H01M2004/8689H01M2008/1293Y02E60/50
Inventor 王素力夏章讯孙公权
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI