Bipolar plate materials for solid polymer fuel cells |
| |
Authors: | D.P. Davies P.L. Adcock M. Turpin S.J. Rowen |
| |
Affiliation: | (1) Fuel Cell Research Group, Department of AAETS, Loughborough University, Loughborough, Leicestershire, LE11 3TU, Great Britain |
| |
Abstract: | The interfacial ohmic losses between the bipolar plate and the MEA can significantly reduce the overall power output from a SPFC. For graphitic bipolar plate materials, these losses are insignificant relative to stainless steel, where the existence of a passive film on the surface greatly reduces electrical conductivity. In this paper we have evaluated different bipolar plate materials, and present long-term fuel cell data for Poco® graphite, titanium, 316 and 310 stainless steel. The properties of the passive film on the surface of 316 and 310 stainless steel are markedly different. Although both were adequately corrosion resistant in a fuel cell environment, 310 tended to produce higher fuel cell performance and like 316, no degradation was observed after 1400 h testing. Analysis of the passive film indicated that this increased performance was related to the decreased thickness of the oxide film. |
| |
Keywords: | bipolar plate passive film solid polymer fuel cell stainless steel |
本文献已被 SpringerLink 等数据库收录! |
|