Non-noble metal fuel cell oxygen reduction electrocatalyst

A fuel cell and electrocatalyst technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of catalyst catalytic activity and stability gap, high preparation cost, expensive and other problems, which is conducive to large-scale production and reduces preparation Cost and manpower saving effect
CN101859906AInactive Publication Date: 2010-10-13CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2010-10-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a non-noble metal fuel cell oxygen reduction electrocatalyst which is a product obtained by a method comprising the steps of: (1) pretreatment of acetylene black; (2) mechanical grinding: mixing cobalt chloride (CoC12. 6H2O), nitrogen source (melamine or hexamethylene tetramine) and carbon black (acetylene black or Vulcan XC-72R) which have the mass ratio of 1: 2: 10 into a mortar for mechanical grinding for 30min until even dispersion; and (3) heat treatment: adopting a way of sectional type temperature rise under the nitrogen protection, namely, maintaining for 10min when raising 100 DEG C at every time, then raising the temperature again, and so on; finally, maintaining for 1-5h at the required temperature (500-900 DEG C), and stopping heating; and naturally cooling to the room temperature, and then closing nitrogen. The non-noble metal fuel cell oxygen reduction electrocatalyst is low in the price of raw materials, and greatly reduces the preparation cost of oxygen reduction catalyst. The method is simple, convenient and easy, and is suitable for large-scale production and preparation of the catalyst.
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Description

technical field

[0001] The invention belongs to the field of fuel cell catalysts, and more specifically relates to a non-noble metal fuel cell oxygen reduction electrocatalyst. Background technique

[0002] The oxygen reduction reaction of current fuel cells requires the use of expensive platinum-based catalysts with poor methanol resistance, which hinders its large-scale application. Therefore, the research on cathode oxygen reduction catalysts with low price, good stability, good catalytic activity and methanol tolerance is of key significance for the large-scale commercial application of proton exchange membrane fuel cells.

[0003] In the past few decades, a variety of non-precious metal or non-platinum catalysts have been developed, among which N 4 - Metal complex catalysts for macrocyclic compounds and derivatives (referred to as TM-N 4 type) is a very important class (Cicero W.B.Bezerra, Lei Zhang, Kunchan Lee, etc. A review of Fe-N / C and Co-N / C catalysts for the ox...

Claims

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