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Implement mMethod for improving electrooxidation activity of methanol fuel cell

A technology of methanol fuel cell and its implementation method, which is applied in the field of methanol fuel cell performance research, can solve problems such as short life, low catalytic activity, and high price, and achieve excellent electrocatalytic activity, wide application prospects, and high active site density.

Inactive Publication Date: 2018-03-27
UNIV OF JINAN
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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention solves the technical problems of easy poisoning, short service life, high price and low catalytic activity of methanol fuel cell catalysts in the prior art, and prepares a rough octahedron with high-density active sites. Morphology of PtCoFe alloy nanoparticles for enhanced methanol electrocatalytic performance of Pt-based nanostructured catalysts

Method used

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  • Implement mMethod for improving electrooxidation activity of methanol fuel cell
  • Implement mMethod for improving electrooxidation activity of methanol fuel cell
  • Implement mMethod for improving electrooxidation activity of methanol fuel cell

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Embodiment 1

[0022] Measure 1.0mL chloroplatinic acid (19.3mmol / L), 4.0mL concentration is the cobalt chloride aqueous solution of 1.66mmol / L and 3.0mL concentration is the ferric chloride aqueous solution of 1.66mmol / L in the 30ml reactor, then add Glycine, sodium dodecyl sulfate SDS and NaI are stirred and dissolved with a magnetic stirrer, and then the air in the reactor is exhausted with oxygen, and 1.0MPa oxygen is introduced into the reactor, and then heated at 210°C for reaction. After the end, through ethanol centrifugal washing, freeze-drying and other processing steps, rough octahedral PtCoFe alloy nanoparticles (such as Figure 1-2 Shown), wherein, the consumption of glycine is 120mg, and the consumption range of SDS is 220mg, and the addition of NaI is 110mg.

[0023] Methanol electro-oxidation test: The anode electro-oxidation performance test was carried out on a CHI650D electrochemical workstation using a conventional three-electrode system. A saturated calomel electrode (S...

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Abstract

The invention relates to an implement method for improving electrooxidation activity of a methanol fuel cell. The implement method is characterized in that: a cling cyclic voltammetry test is performed in 0.5M H2SO4+ and 2M CH3OH electrolyte, a prepared rough octahedron PtCoFe is taken as an electrooxidation catalyst of the methanol fuel cell; the catalyst is a high-selectivity rough octahedron PtCoFe alloy nanoparticle prepared by adding a specified volume of SDS and NaIinto taking chloroplatinic acid, cobalt chloride and ferric trichloride serving as raw materials, taking glycine serving asa reduction agent and a protection agent, and adding a specified volume of SDS and NaI. The preparation method is environment-environmentally friendly, the prepared rough octahedron PtCoFe alloy nanoparticle has a large quantity of stepped atoms, is high in active site density, is superior on in the aspect of electrocatalytic activity in the electrooxidation catalytic experiment of the methanol fuel cell, and has wide application prospect.

Description

technical field [0001] The invention belongs to the field of methanol fuel cell performance research. Specifically, the present invention uses rough octahedral PtCoFe alloy nanoparticles to improve the electro-oxidation performance of catalytic oxidation methanol fuel cells. 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. relation. [0003] Amon...

Claims

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Application Information

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IPC IPC(8): H01M4/92B82Y40/00G01N27/30
CPCB82Y40/00G01N27/30H01M4/921Y02E60/50
Inventor 高道伟吕一品李书娜陈国柱
Owner UNIV OF JINAN
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