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High performance ORR (oxygen reduction reaction) PGM (pt group metal) free catalyst

A catalyst, transition metal technology, applied in the field of platinum group metal-free catalysts, which can solve the problems of insufficient commercial application, low porosity, and lack of stability.

Inactive Publication Date: 2011-04-20
ACTA SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this is not enough for any commercial application due to its relatively low porosity
Also, not getting enough stability

Method used

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  • High performance ORR (oxygen reduction reaction) PGM (pt group metal) free catalyst
  • High performance ORR (oxygen reduction reaction) PGM (pt group metal) free catalyst
  • High performance ORR (oxygen reduction reaction) PGM (pt group metal) free catalyst

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Embodiment Construction

[0051] Catalysts of the present invention are prepared by thermally treating the blend comprising:

[0052] a) phthalocyanine (PC) iron of general formula (I)

[0053]

[0054] in

[0055] M is Fe 2+ , Fe 3+

[0056] R is hydrogen or an electron withdrawing substituent

[0057] Wherein when M=Fe 3+ When there is a compensation ion X -

[0058] b) a transition metal phthalocyanine (Metal-PC) of general formula (II)

[0059]

[0060] in

[0061] M' is Cu 2+ or Co 2+

[0062] R', other than R, is hydrogen or an electron-withdrawing substituent

[0063] c) a nitrogen and sulfur compound

[0064] d) A conductive porous carbon material

[0065] The temperature and time of the heat treatment according to the invention are sufficient to first polymerize and then at least partially thermally crack the phthalocyanine, so the heat treatment is for example at 350-900° C. for at least 0.5 hours. The heat treatment is the basic step...

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Abstract

Herein are disclosed PGM-free catalysts, made starting from transition metal phthalocyanine complexes, useful for catalytic ORR, and more particularly, alcohol tolerant catalysts as cathode material for ORR in alkaline and acid medium, characterized by low hydrogen peroxide generation and having better performance, stability and activity.

Description

Technical field: [0001] The present invention relates to platinum group metal-free catalysts for the oxygen reduction reaction (ORR), and more particularly to electrocatalysts useful as cathode materials for the electroreduction of oxygen in fuel cells. Background technique: [0002] A fuel cell is an electrochemical device that directly converts reactive chemical energy into electrical energy. In such cells fuel (usually hydrogen, alcohols or saturated hydrocarbons) and oxidant (usually oxygen from the air) are continuously supplied to the electrodes. In theory, a fuel cell can continue to generate electricity as long as it maintains the supply of fuel and oxidant. In practice, however, degradation or failure of components limits the practical useful life of a fuel cell. [0003] Various fuel cells are at different stages of development; given the electrocatalysts used in practical fuel cells the following example is given: The fuel is H 2 Polymer electrolysis fuel cell ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B01J31/00
CPCY02E60/522H01M2008/1095H01M4/9008Y02E60/50H01M12/06Y02E60/128Y02E60/523
Inventor 斯德法诺·卡塔诺奇米歇尔·普拉纳
Owner ACTA SPA
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