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A Realization Method 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 the problems of low catalytic activity, high price, short life, etc., and achieve the effects of wide application prospects, high active site density, and excellent electrocatalytic activity

Inactive Publication Date: 2019-08-09
UNIV OF JINAN
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  • Application Information

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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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  • A Realization Method for Improving Electrooxidation Activity of Methanol Fuel Cell
  • A Realization Method for Improving Electrooxidation Activity of Methanol Fuel Cell
  • A Realization Method 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 scope of SDS is 220mg, and the addition of NaI is 110mg.

[0023] Methanol electrooxidation test: The anode electrooxidation performance test adopts a conventional three-electrode system and is carried out on a CHI650D electrochemical workstation. A saturated calomel electrode ...

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Abstract

The invention relates to a realization method for improving the electrooxidation activity of a methanol fuel cell. Methanol electro-oxidation test is performed at 0.5M H 2 SO 4 +2M CH 3 The cyclic voltammetry test was carried out in the OH electrolyte, and the prepared rough octahedral PtCoFe was used as the electrooxidation catalyst for methanol fuel cells. The catalyst was prepared using chloroplatinic acid, cobalt chloride and ferric chloride as raw materials, and glycine as the reducing agent and protection agent, adding specific content of SDS and NaI to prepare rough octahedral PtCoFe alloy nanoparticles with high selectivity, and the preparation method is green and clean. The obtained rough octahedral PtCoFe alloy nanoparticles have many step atoms and high density of active sites, and show excellent electrocatalytic activity in methanol fuel cell electrooxidation catalysis experiments, and have broad application prospects.

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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Patent Type & Authority Patents(China)
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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