Direct Methanol Fuel Cell Durability

摘要: This chapter provides an overview of performance durability issues typically occurring in the direct methanol fuel cell (DMFC), both single cells and short DMFC stacks. The focus this is on those sources degradation that have been recognized as impacting operation a major way (1) loss cathode activity due to surface oxide (hydroxide) formation, (2) ruthenium crossover from anode through proton-conducting membrane, (3) membrane–electrode interface degradation. Much attention devoted interpretation losses observed during extended DMFCs under “realistic” operating conditions, including high-voltage operation. A separation attempted whenever possible. Also addressed are various methods mitigating losses, either at stage assembly design fabrication or cell.