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

Oxygen reduction catalyst for heteroatom doped carbon microsphere loaded iron phosphide nanoparticle and preparation method of oxygen reduction catalyst

A nanoparticle, iron phosphide technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as poor controllability, affecting material properties, and poor micro-nano structure uniformity, and achieves Uniform size, simple and efficient process, uniform micro-nano structure

Active Publication Date: 2018-11-13
LINYI UNIVERSITY
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are some patent reports on heteroatom-doped carbon microspheres mentioned above, most of the current preparation methods have poor controllability, and the chemical structure and micro-nano structure uniformity of the prepared materials are poor, which affects the material properties.

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
  • Oxygen reduction catalyst for heteroatom doped carbon microsphere loaded iron phosphide nanoparticle and preparation method of oxygen reduction catalyst
  • Oxygen reduction catalyst for heteroatom doped carbon microsphere loaded iron phosphide nanoparticle and preparation method of oxygen reduction catalyst
  • Oxygen reduction catalyst for heteroatom doped carbon microsphere loaded iron phosphide nanoparticle and preparation method of oxygen reduction catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this example, the preparation of the heteroatom-doped carbon microsphere-supported iron phosphide nanoparticle catalyst is realized through the following steps:

[0029] Step 1, weigh 0.5g of hexachlorocyclotriphosphazene and 1.1g of 4,4'-dihydroxydiphenyl sulfone into a single-necked flask containing 100mL of acetone, and make hexachlorocyclotriphosphazene Dissolve with 4,4'-dihydroxydiphenyl sulfone; add 2mL triethylamine to the solution, keep the reaction temperature at 40°C, and react for 8 hours to obtain a milky white dispersion; after the reaction, centrifuge, wash with water, and dry to obtain a white Polyphosphazene microspheres;

[0030] Step 2, weigh 0.2 g of ferrous sulfate and dissolve it in 1 mL of water. After fully dissolving, add the solution to 50 mL of the aqueous dispersion of polyphosphazene microspheres with a concentration of 10 mg / mL; stir for 12 hours to make the polyphosphazene microspheres fully Adsorb ferrous sulfate; after the reaction, ...

Embodiment 2

[0033] In this example, the preparation of the heteroatom-doped carbon microsphere-supported iron phosphide nanoparticle catalyst is realized through the following steps:

[0034] Step 1, weigh 0.5g of hexachlorocyclotriphosphazene and 0.5g of p-phenylenediamine and dissolve in 60mL of acetone, measure 2mL of triethylamine and add it to the above solution, after fully dissolving, transfer the solution to 100mL polytetrafluoroethylene In a vinyl fluoride-lined digestion tank, react at 150°C for 3 hours; after the reaction, centrifuge, wash with ethanol, and dry to obtain light yellow polyphosphazene microspheres;

[0035] Step 2, weigh 0.1 g of ferrous chloride tetrahydrate and dissolve it in 1 mL of water. After fully dissolving, add the solution to 50 mL of an aqueous dispersion of polyphosphazene microspheres with a concentration of 10 mg / mL; stir for 12 hours to make the polyphosphazene The microspheres fully adsorb ferrous chloride tetrahydrate; after the reaction, centrif...

Embodiment 3

[0038] In this example, the preparation of the heteroatom-doped carbon microsphere-supported iron phosphide nanoparticle catalyst is realized through the following steps:

[0039] Step 1, weigh 0.5g of hexachlorocyclotriphosphazene and 0.5g of p-phenylenediamine and dissolve in 60mL of acetone, measure 2mL of triethylamine and add it to the above solution, after fully dissolving, transfer the solution to 100mL polytetrafluoroethylene In a vinyl fluoride-lined digestion tank, react at 150°C for 3 hours; after the reaction, centrifuge, wash with ethanol, and dry to obtain light yellow polyphosphazene microspheres;

[0040]Step 2, take 0.1 g of iron acetate and dissolve it in 1 mL of ethanol, and after fully dissolving, add the solution to 50 mL of the ethanol dispersion of polyphosphazene microspheres with a concentration of 10 mg / mL; stir for 6 hours to make the polyphosphazene microspheres Fully adsorb iron acetate; after the reaction, centrifuge, wash, and dry to obtain polyp...

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 belongs to the technical field of nano novel material preparation and relates to an oxygen reduction catalyst for heteroatom doped carbon microsphere loaded iron phosphide nanoparticles.According to the nano catalyst, polyphosphazene microspheres are adopted as a heteroatom doped porous carbon microsphere precursor, an organic / inorganic ferric salt is adopted as an iron phosphide precursor, and the ferric salt is adsorbed by polyphosphazene microspheres to prepare the catalyst through carbonization in the presence of an inert atmosphere. The catalyst has catalytic activity approximate to that of a commercial Pt / C catalyst, is low in price and easy to obtain, and meanwhile has properties such as catalysis stability, methanol resistance, carbon monoxide toxicity resistance which are higher than those of the commercial Pt / C catalyst.

Description

Technical field: [0001] The invention belongs to the technical field of nano-material preparation, and relates to a nano-oxygen reduction catalyst, in particular to a nano-composite material based on heteroatom-doped carbon microspheres loaded with iron phosphide nanoparticles and a preparation process thereof. Background technique: [0002] Because electrochemical energy storage and conversion devices such as fuel cells and metal-air batteries are clean, safe, environmentally friendly, and efficient, they show broad application space and great potential in the fields of electric vehicles and mobile electronic products. However, as an important part of fuel cells and metal-air batteries, the kinetics of the oxygen reduction reaction at the cathode is very slow, requiring the use of catalysts to catalyze the process. Currently, the catalysts with the best performance are noble metal catalysts, such as Pt / C catalysts. However, due to the scarcity and high price of precious me...

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): H01M4/88H01M4/90B82Y30/00
CPCB82Y30/00H01M4/88H01M4/9083Y02E60/50
Inventor 陈奎永刘悦刘涛梁士明王常春
Owner LINYI UNIVERSITY
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