Bifunctional oxygen electrode with corrosion-resistive gas diffusion layer for unitized regenerative fuel cell

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• 作者：Shidong Song ; Huamin Zhang ; Xiaoping Ma ; Zhi-Gang Shao ; Yining Zhang and Baolian Yi
• 关键词：Unitized regenerative fuel cells ; Gas diffusion layer ; Micro-porous layer ; Water electrolysis ; Bifunctional oxygen electrode
• 刊名：Electrochemistry Communications
• 出版年：2006
• 出版时间：March 2006
• 年：2006
• 卷：8
• 期：3
• 页码：399-405
• 全文大小：525 K

文摘

To develop the unitized regenerative fuel cell (URFC) with low cost and high performance, a novel bifunctional oxygen electrode with a thin-film electrocatalyst layer and a corrosion-resistive gas diffusion layer (GDL) prepared by the carbon paper backing and a protective micro-porous layer (MPL) was developed. The protective MPL was made of the IrO₂ deposited fine Ti powders. The cycle performance and polarization curves for both fuel cell and water electrolysis modes of URFC operation were investigated. The cycle performance of the URFC was stable during 20 cycles. It exhibits a high fuel cell performance as good as the URFC using the conventional GDL and a much higher water electrolysis performance.