A non-flooding hybrid polymer electrolyte fuel cell

Abstract

Water management remains a major issue for polymer electrolyte-based fuel cells. This letter presents a novel hybrid polymer fuel cell that prevents flooding. A proton exchange membrane (PEM) and an anion exchange membrane (AEM) are placed on opposite sides of a porous, hydrophilic layer in which the product water is formed and then shunted to the exterior of the fuel cell. Maximum power output during these initial tests was 8 mW/cm2 at 30°C, somewhat less than comparable PEM and AEM fuel cells. Though the design is promising, potentiostatic tests at 70°C indicate that maintaining hydration may be a concern. © 2011 The Electrochemical Society.