High temperature proton exchange membrane fuel cells: Advantages and technical challenges

High temperature proton exchange membrane fuel cells (HT-PEMFC) have attracted great interests in recent years due to their advantages compared with common PEMFC. PEM fuel cells based on perfluorinated membrane electrolytes operate in the temperature range between 60 and 80°C while elevating the operating temperature (up to 200°C) provide improved carbon monoxide tolerance, faster electrode kinetics, simpler thermal and water management and more efficient recovery of waste heat as a practical energy source. In this investigation the drivers behind the interest in HT-PEMFCs and the challenges in developing novel materials for membranes preparation is reviewed. Also a brief analysis of emperature requirements for CO tolerance is presented. The research shows an exhaustive presentation and comparative discussions on various types of high temperature membranes. Finally, the importance of porosity in electrodes for HT-PEM has been studied.

کلیدواژه ها:

HT-PEM fuel cell ، Polymer electrolyte ، PBI ، NafionTM