EXAFS, XPS and electrochemical studies on oxygen reduction catalysts obtained by heat treatment of iron phenanthroline complexes supported on high surface area carbon black
EXAFS, XPS and electrochemical studies on oxygen reduction catalysts obtained by heat treatment of iron phenanthroline complexes supported on high surface area carbon black
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DOI：
10.1016/s0022-0728(02)01189-0
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发表时间：
2002-11-01
影响因子：
4.5
通讯作者：
Fiechter, S
中科院分区：
文献类型：
--
作者：
Bron, M;Radnik, J;Fiechter, S
氧还原催化剂已制备的热处理的基础上，碳负载的铁菲咯啉配合物。催化剂对氧还原的活性取决于合成中使用的碳的表面积。其活性高于其他基于钌的替代性氧还原催化剂。与金属的量有关，活性与最先进的氧还原催化剂（负载在碳上的铂）的活性相当。EXAFS测量表明，该催化剂的活性中心的结构由铁离子，这是配位到四个氮原子。用TEM观察催化剂中没有发现结晶颗粒。(C)2002 Elsevier Science B.V.保留所有权利。
Oxygen reduction catalysts have been prepared on the basis of heat-treated, carbon supported iron phenanthroline complexes. The activity of the catalyst towards oxygen reduction depends on the surface area of the carbon used in the synthesis. It is higher than the activity of other alternative oxygen reduction catalysts based on ruthenium. Related to the amount of metal, the activity is comparable to that of the state-of-the-art oxygen reduction catalyst, platinum supported onto carbon. EXAFS measurements indicate that the structure of the active centre of the catalyst consists of an iron ion, which is coordinated to four nitrogen atoms. No crystalline particles can be found in the catalyst using TEM. (C) 2002 Elsevier Science B.V. All rights reserved.