Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electrocatalyst of negative electrode of fuel cell as well as preparation method and application thereof

A fuel cell cathode, electrocatalyst technology, applied in battery electrodes, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as performance attenuation, achieve low cost, improve durability, and increase the effect of diversification

Active Publication Date: 2014-03-26
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF4 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the activity and stability of this catalyst under alkaline conditions are superior to commercial Pt / C catalysts, its performance still has a certain degree of attenuation after long-term operation under acidic conditions.

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
  • Electrocatalyst of negative electrode of fuel cell as well as preparation method and application thereof
  • Electrocatalyst of negative electrode of fuel cell as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The now configured aniline hydrochloride solution (5mL aniline+3mL 37.5%HCl+14mL H 2 O) 10 mL. After stirring for 30 minutes, 1mol / L HCl solution was added dropwise to adjust the pH of the solution to 3.0. After 1 h of reaction, 25 mL of 0.5 mol / L (NH 4 ) 2 S 2 o 8 The solution was slowly dropped into the above solution, phenylphosphine was added thereto, the molar ratio of N:P was 10:1, and then 0.36g Co(NO 3 ) 2 ·6H 2 O, after stirring evenly, polymerize at room temperature for 12 hours, evaporate to dryness, wash, and dry at 85°C, then treat it in an ammonia atmosphere at 900°C for 3 hours to obtain a black powder; then use a ball mill for 3 hours to obtain Phosphorus and boron co-doped nanocarbon electrocatalysts with ordered nanostructures.

Embodiment 2

[0052] The now configured aniline hydrochloride solution (5mL aniline+3mL 37.5%HCl+14mL H 2 O) 10 mL. After stirring for 30 minutes, 1mol / L HCl solution was added dropwise to adjust the pH of the solution to 3.0. After 1 h of reaction, 25 mL of 0.5 mol / L (NH 4 ) 2 S 2 o 8 The solution was slowly dropped into the above solution, phenylphosphine was added thereto, the molar ratio of N:P was 10:1, and then 0.35g Fe(NO 3 ) 3 ·6H 2 O, after stirring evenly, polymerize at room temperature for 12 hours, evaporate to dryness, wash, and dry at 85°C, then treat it in an ammonia atmosphere at 900°C for 3 hours to obtain a black powder; put the above powder into 1M acidic aqueous solution , acid treatment for 1 h, washing the metal in the catalyst; then ball milling it with a ball mill for 3 h to obtain a P, N co-doped nano-carbon electrocatalyst with ordered nanostructure.

[0053] figure 1 It is a comparison of the oxygen reduction polarization curves before and after the life ...

Embodiment 3

[0056] The now configured polythiophene hydrochloride solution (10mL aniline+6mL 37.5%HCl+28mL H 2 O) 20mL. After stirring for 30 minutes, 1mol / L HCl solution was added dropwise to adjust the pH of the solution to 3.0. After 1 h of reaction, 25 mL of 0.5 mol / L (NH 4 ) 2 S 2 o 8 The solution was slowly dropped into the above solution, phenylphosphine was added thereto, the molar ratio of N:P was 30:1, and then 0.36g Co(NO 3 ) 2 ·6H 2O, after stirring evenly, polymerize at room temperature for 12 hours, evaporate to dryness, wash, and dry at 85°C, then treat it in an ammonia atmosphere at 900°C for 3 hours to obtain a black powder; then use a ball mill for 3 hours to obtain Doped nanocarbon electrocatalysts with ordered nanostructures.

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 an electrocatalyst of a negative electrode of a fuel cell as well as a preparation method and application of the electrocatalyst. The catalyst adopts a conductive polymer as a reaction precursor, the conductive polymer is polymerized under the acid and oxidation condition to obtain polyaniline, the polyaniline is additionally provided with transition metal salt, and a phosphorus compound and / or a boron compound as a precursor, and the mixture is dried and is subjected to pyrolysis at the high temperature to obtain the electrocatalyst. The catalyst is N, phosphorus and / or boron co-doped nanometer carbon with a porous nanometer structure; the total mass percent of the doped heteroatom is 0.2 to 15 percent, the mass ratio of N to phosphorus and / or boron is 5:1 to 100:1, the weight percentage of metal is 0.1 to 10 percent, and the mass percent of the nanometer carbon is 75.0 to 99.7 percent.

Description

technical field [0001] The present invention relates to a cathode electrocatalyst for fuel cells and its preparation method and application thereof, in particular to the preparation and application of a nitrogen, phosphorus and / or boron co-doped nano-carbon electrocatalyst, which can be used as Cathodic electrocatalysts for proton exchange membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). Background technique [0002] A fuel cell is an electrochemical energy conversion device that directly converts chemical energy present in fuels and oxidants into electrical energy. Due to its advantages of high energy density and environmental friendliness, it is considered to be one of the preferred clean and efficient power generation technologies in the 21st century. Electrocatalyst is one of the key materials of fuel cells, and its activity and stability directly determine the performance and service life of fuel cells. The currently widely used fuel cell cathode oxy...

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
IPC IPC(8): H01M4/90B01J27/24B01J35/10
CPCY02E60/50H01M4/8605H01M4/9008H01M4/926
Inventor 张华民钟和香许壮毛景霞柳丝丝邱艳玲
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com