Wang Junhua, Gu Shuang, Kaspar Robert B, Zhang Bingzi, Yan Yushan
Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716 (USA).
ChemSusChem. 2013 Nov;6(11):2079-82. doi: 10.1002/cssc.201300285. Epub 2013 Aug 22.
Stable and able: The hydroxide-conducting cationic functional group used in the hydroxide-exchange membranes of fuel cells is key to controlling chemical stability and solubility. A new imidazolium cation, 1,4,5-trimethyl-2-(2,4,6-trimethoxyphenyl)imidazolium, is designed to take advantage of both strong electron-donation properties and steric hindrance. Synergy between these two effects leads to an efficient hydroxide-exchange membrane, with increased alkaline stability and improved OH(-) conductivity.
燃料电池氢氧化物交换膜中使用的传导氢氧化物的阳离子官能团是控制化学稳定性和溶解性的关键。一种新型咪唑鎓阳离子，1,4,5-三甲基-2-(2,4,6-三甲氧基苯基)咪唑鎓，旨在利用强电子供体性质和空间位阻。这两种效应之间的协同作用产生了一种高效的氢氧化物交换膜，具有更高的碱性稳定性和改善的OH(-)传导性。
