SIDE-CHAIN BLOCK SULFONATED POLY(ARYL ETHER KETONE)S WITH HIGH PROTON CONDUCTIVITY FOR PROTON EXCHANGE MEMBRANES FUEL CELLS
Acid-functionalized aromatic hydrocarbons have been studied intensively as proton exchange membranes (PEMs), due to their thermal and mechanical stabilities, their low cost, and their high proton conductivity. The performances of PEMs has close relationship with several characters such as main chain and/or side chain structures, degree of sulfonation, number and position of the acid groups, composition of hydrophilic and hydrophobic components, and membrane morphology. The phase separation directly determines the properties of PEMs, such as water uptake, proton conductivity, and methanol crossover. It has been reported that the sulfonated aromatic polymers cannot construct defined hydrophilic domains, as the rigid aromatic backbone prevents the formation of continuous conducting channels. Several approaches have been done to design and synthesize polymer simulating the structure of Nafion and try to match up the performance of Nafion.
Fuel cells Proton Exchange Membrane Block Polymers. Phase Separation
Tianyi Na Ke Shao Liyuan Zhang Gang Zhang
Chemistry College, Jilin University 2699＃ Qianjin Street, Changchun, 130012
国际会议
大连
英文
118
2012-05-28（万方平台首次上网日期，不代表论文的发表时间）