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A Study on the Performance of PEMFC Using the TiN-Coated 316 Stainless Steel Bipolar Plates  

Cho, Eun-Ae (Fuel Cell Research Center, Korea Institute of Science and Technology)
Publication Information
Journal of Hydrogen and New Energy / v.14, no.4, 2003 , pp. 291-297 More about this Journal
Abstract
As an alternative bipolar plate material for polymer electrolyte membrane fuel cell (PEMFC), TiN-coated 316 stainless was evaluated in terms of electrical contact resistance and water contact angle. Performance and lifetime of the TiN-coated 316 bipolar plates were measured in comparison with those of graphite and bare 316 bipolar plates. At a cell voltage of 0.6 V, current density of the single cells using graphite, AISI 316, and TiN/316 bipolar plates was 996, 796, and $896mA/cm^2$, respectively. By coating 316 stainless steel with TiN layer, performance degradation rate determined to be the voltage degradation rate at a cell voltage of 0.6 V was reduced from 2.3 to 0.43 mV/h.
Keywords
PEMFC; Stainless steel; Bipolar plate; TiN;
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