Performance of vapor-fed direct dimethyl ether fuel cell utilizing high temperature polybenzimidazole polymer electrolyte membrane

详细信息    查看全文

• 作者：Jay Neutzler ; Guoqing Qian ; Kevin Huang ; Brian Benicewicz
• 关键词：Dimethyl ether ; Polybenzimidazole ; PEM ; Fuel cell ; Synthetic fuel ; Performance
• 刊名：Journal of Power Sources
• 出版年：2012
• 出版时间：15 October, 2012
• 年：2012
• 卷：216
• 期：Complete
• 页码：471-474
• 全文大小：393 K

文摘

There is increasing interest in dimethyl ether (DME) as a synthetic fuel. It has present-day relevance and introduces an effective path forward as an energy-dense, low-pressure hydrogen carrier/storage fuel for fuel cells with applications in transportation, stationary, and portable power. Direct reaction DME fuel cells have particular relevance to portable power. This study presents the performance of the vapor-fed direct reaction of DME using high temperature Polybenzimidazole (PBI) Polymer Electrolyte Membrane (PEM). Catalyzed PBI membrane utilized a Pt/Ru black anode and a Pt/C supported cathode. Performance was evaluated from temperatures of 180?¡ãC-210?¡ãC and at pressures from 100?kPa to 300?kPa. A strong performance correlation was observed in this study for these temperatures and pressures. A peak power density of 50?mW?cm^?2 was achieved at 180?¡ãC without back pressure, whereas, an increase to 129?mW?cm^?2 was achieved at 210?¡ãC at 300?kPa pressure.

The performance of high temperature PBI PEMFCs with direct vapor-fed DME are investigated with emphasis on the critical variables of cell operation; temperature, back pressure, and humidity.