New catalysts for borohydride electro-oxidation using Rh porphyrins

被引：13
|
作者：
Yamazaki, Shin-ichi [1 ]
Senoh, Hiroshi [1 ]
Yasuda, Kazuaki [1 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Res Inst Ubiquitous Energy Devices, Osaka 5638577, Japan
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 06期
关键词：
Borohydride; Hydrogen; Fuel cell; Electrochemical oxidation; Rhodium; Porphyrin; FUEL-CELL;
D O I：
10.1016/j.elecom.2009.03.039
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
New borohydride electro-oxidation catalysts for direct borohydride fuel cells were developed. These catalysts use rhodium porphyrins on carbon black. The overpotential for borohydride electro-oxidation is much lower than that for a gold electrode. Hydrogen generation by the hydrolysis of borohydride is suppressed much more with rhodium porphyrin catalysts than with a platinum catalyst. Rh porphyrins oxidized borohydride below 0V vs. a reversible hydrogen electrode. The measurement of hydrogen generation after electrolysis indicates that the apparent number of electrons transferred in rhodium octaethylporphyrin exceeds 7. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1109 / 1112
页数：4
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