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Realization method for improving electrooxidation activity of formic acid fuel cell

A technology for a formic acid fuel cell and a realization method, which is applied in the field of formic acid fuel cell performance research, can solve the problems of low catalytic activity, high price, and short life of the catalyst, and achieves a wide application prospect, high active site density, and excellent electrocatalytic activity. Effect

Inactive Publication Date: 2018-03-23
UNIV OF JINAN
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  • Abstract
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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention solves the technical problems that current Pt nanostructure catalysts are prone to poisoning, short life, high price, and low catalytic activity of catalysts in the prior art, and prepares a PtCoFe alloy with a polygonal morphology with high-density active sites Nanocatalysts to enhance formic acid electrooxidation performance over Pt nanostructured catalysts

Method used

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  • Realization method for improving electrooxidation activity of formic acid fuel cell
  • Realization method for improving electrooxidation activity of formic acid fuel cell
  • Realization method for improving electrooxidation activity of formic acid fuel cell

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Embodiment 1

[0022] Measure 1.0mL chloroplatinic acid (19.3mmol / L), 4.0mL concentration is the cobalt chloride of 1.66mmol / L and 3.0mL concentration is the iron trichloride aqueous solution of 1.66mmol / L in the 30ml reactor, then add poly Vinylpyrrolidone K30, hexadecyltrimethylammonium bromide CTAB and NaBr are stirred and dissolved with a magnetic stirrer, and then the air in the reactor is exhausted with hydrogen, and 0.8MPa hydrogen is introduced into the reactor, and then heated at 200°C The reaction is carried out under heating, and after the reaction is completed, through ethanol centrifugal washing, freeze-drying and other processing steps to obtain polygonal PtCoFe alloy nanoparticles (such as figure 2 Shown), wherein, the consumption scope of polyvinylpyrrolidone K30 is 210mg, and the consumption scope of cetyltrimethylammonium bromide is 60mg, and the consumption of NaBr is identical with the consumption of cetyltrimethylammonium bromide.

[0023] Formic acid fuel cell electro-...

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Abstract

The invention relates to a realization method for improving the electrooxidation activity of a formic acid fuel cell. Formic acid electrooxidation test is cyclic voltammetry test in a 0.5 M H2SO4 and0.25 M HCOOH electrolyte, prepared polygonal PtCoFe is used as a formic acid fuel cell electrooxidation catalyst, PtCoFe alloy nano-particles having a high selectivity and a polygonal morphology are prepared in a hydrogen reducing atmosphere through using chloroplatinic acid, cobalt chloride and iron trichloride as raw materials, PVP as a reducing agent and a protecting agent and adding specific amounts of CTAB and NaBr, and the preparation process is green and clean. The obtained polygonal PtCoFe alloy nano-particles have the advantages of many step atoms, high active site density, excellentelectrocatalytic activity in formic acid fuel cell electrooxidation catalysis experiments, and wide application prospect.

Description

technical field [0001] The invention belongs to the field of formic acid fuel cell performance research. Specifically, the present invention uses PtCoFe alloy nanoparticles with polygonal morphology to improve the electro-oxidation performance of a fuel cell that catalyzes and oxidizes formic acid. Background technique [0002] Due to its excellent catalytic performance and thermal stability, noble metal Pt nanostructure catalysts are widely used in industrial catalysis, biomimetic, electrocatalysis and other fields. However, due to some restrictive factors in practical applications, such as easy poisoning, short life and high price, this excellent nano-catalyst cannot be further promoted and applied. In order to solve these problems, researchers often use low-cost 3d transition metal elements to partially replace Pt to form Pt-based binary / multi-element alloy catalysts, and explore its morphology, composition and catalytic performance stability through condition control. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M8/1011B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/921H01M4/928H01M8/1011Y02E60/50
Inventor 高道伟吕一品李书娜陈国柱
Owner UNIV OF JINAN
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