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

Polymer-modified nano precious metal catalyst and preparation method therefor

A technology of noble metal catalysts and polymers, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem that the electrochemical stability needs to be improved and the mass transfer of catalysts is affected Performance and other issues, to achieve the effects of inhibiting sintering and loss, improving electrochemical stability and service life, and good mass transfer performance

Active Publication Date: 2015-08-19
SHENYANG LIGONG UNIV
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that while improving the conductivity, it may affect the mass transfer performance of the catalyst
Ion-conducting polymers such as perfluorosulfonic acid resins, sulfonated polysulfone resins, and sulfonated polyphenylene sulfide resins have also been used to improve the ion conductivity and mass transfer properties of nano-electrocatalyst surfaces, but their electrochemical stability Sex still needs to be improved

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Suspend 160 mg XC-72 carbon black in the solution, add 0.4 mg polymethacryloyloxyethyl dimethyl benzyl ammonium chloride, and ultrasonically disperse for 20 min; (2) Add 14.8 ml palladium chloride Ethylene glycol solution (2.38 mgPd / ml), microwave irradiation for 60 s; (3) Dissolve 12 mg aniline monomer and 20 mg ammonium persulfate in 0.5 mol / L H 2 SO 4 And added to the above suspension; (4) in 5 o Stir the reaction at C for 12 h, filter and wash with deionized water; (5) put the catalyst in a vacuum oven, o C dry for 24 h.

Embodiment 2

[0018] (1) Suspend 140 mg of multi-walled carbon nanotubes in the solution, add 2 mg of polymethacryloyloxyethyldiethylmethylammonium chloride, and disperse ultrasonically for 20 min; (2) Add 27.0 ml of chloroplatinic acid Ethylene glycol solution (1.48 mgPt / ml) and 13.2 ml ruthenium chloride ethylene glycol solution (1.52 mgRu / ml), microwave irradiation for 60 s; (3) Dissolve 15 mg pyrrole monomer and 25 mg ferric chloride respectively at 0.5 mol / L H 2 SO 4 and added to the above suspension; (4) at 10 o Stir the reaction at C for 12 h, filter and wash with deionized water; (5) put the catalyst in a vacuum oven, o C dry for 24 h.

Embodiment 3

[0020] (1) Suspend 160 mg BP2000 carbon black in the solution, add 0.8 mg polyacrylamide-based (2-methylbutyl) trimethyl ammonium chloride, and ultrasonically disperse for 20 min; (2) Add 14.8 ml palladium chloride Ethylene glycol solution (2.38 mgPd / ml), microwave irradiation for 60 s; (3) Dissolve 10 mg thiophene monomer and 40 mg ferric chloride in 0.5 mol / L H 2 SO 4 And added to the above suspension; (4) at 18 o Stir the reaction at C for 12 h, filter and wash with deionized water; (5) put the catalyst in a vacuum oven, o C dry for 24 h.

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

Disclosed are a polymer-modified nano precious metal catalyst and a preparation method therefor. By adopting a carbon carrier, is a cation polymer is attached to the surface of the carbon carrier, and a metal precursor salt is reduced to nano precious metal particles by a reducer and the particles are loaded on the carbon carrier. A conductive polymer monomer is added and subjected to polymerization under the action of an oxidant, and forms a crossed distributed polymer network together with the cation polymer attached on the surface of the carbon carrier. The polymer network has a good mass transfer performance and conductivity. The polymer-modified nano precious metal catalyst prepared by the preparation method has a good catalytic performance and is suitable for low-temperature fuel batteries.

Description

technical field [0001] The invention relates to a low-temperature fuel cell nanometer precious metal catalyst and a preparation method thereof. It is suitable for the preparation of nanometer noble metal catalysts for low-temperature fuel cells, and is especially suitable for the preparation of supported nanometer noble metal catalysts. Background technique [0002] Low-temperature fuel cells include polymer electrolyte fuel cells fueled by hydrogen and direct alcohol fuel cells fueled by small organic molecules. The performance of electrocatalysts is one of the key factors affecting the performance of low-temperature fuel cells. Due to the low operating temperature of low-temperature fuel cells (generally no more than 100 o C), the electrochemical reaction has a higher overpotential and thus works less efficiently. On the other hand, the intermediate products of the electrooxidation reaction of small organic molecules such as CO ads etc. will accumulate on the activ...

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 Applications(China)
IPC IPC(8): B01J31/06H01M4/92
CPCY02E60/50
Inventor 陈维民朱振玉
Owner SHENYANG LIGONG UNIV