Progress in the modification of perfluorosulfonic acid proton exchange membranes for high temperature and low humidity applications
High-temperature proton exchange membrane fuel cell(HT-PEMFC)has been widely noticed due to the advantages of fast electrode reaction,high conversion rate,simple hydrothermal management,and good tolerance,etc.High-temperature proton exchange membrane,as the core component of the proton exchange membrane fuel cell,plays a crucial role in the operation of the whole HT-PEMFC system.Nafion membrane,which is currently the most widely commercialized proton exchange membrane material,exhibits reduced proton conductivity and deteriorated mechanical properties for high temperature and low relative humidity operating environments.In this paper,the research progress on improving the proton conductivity of Nafion membranes in recent years is reviewed,the operation mechanism of Nafion membrane at high temperature and low relative humidity is discussed,the research of structural modification methods of Nafion is summarized and analyzed from the perspective of molecular design,and the research focuses on the inorganic and organic composite materials doping on the Nafion membrane proton conductivity is discussed,and the improvement of high temperature PEM is anticipated.It is also expected that the future development of high-temperature proton exchange membranes will be guided by the subsequent research on high-temperature proton exchange membranes.
万方数据
维普
