Investigation of non-platinum cathode catalysts for direct borohydride fuel cells

被引：52

作者：

Cheng, H. ^{[1
]}

Scott, K. ^{[1
]}

机构：

[1] Univ Newcastle Upon Tyne, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2006年 / 596卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

electrocatalysis; direct borohydride fuel cell; oxygen reduction reaction; non-platinum cathode catalysts; iron tetramethoxyphenyl porphyrin;

D O I：

10.1016/j.jelechem.2006.07.031

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Non-platinum electrocatalysts, i.e. iron tetramethoxyphenyl porphyrin (FeTMPP), silver and nickel, were evaluated regarding their ORR performances in alkaline media in half-cells and in alkaline electrolyte borohydride fuel cells. The FeTMPP cathode showed superior performances to those observed using the silver and nickel cathodes, e.g. a current density of -32.2 mA cm(-2) at -0.8 V vs. Hg/HgO, an exchange current density of 7.3 x 10(-8) mA cm(-2) and power densities of up to 65.3 MW cm(-2). The difference in performance can be attributed to variations in activity towards oxygen reduction reaction and in borohydride tolerance among the cathodes. The non-platinum cathodes were compared to a platinum cathode. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：117 / 123

页数：7

共 16 条

[1] Oxygen reduction on uncatalyzed carbon-PTFE gas diffusion cathode in alkaline medium [J].