Benzimidazolium Functionalized Polysulfone-based Anion Exchange Membranes with Improved Alkaline Stability

作     者：Yu Pan Ting-Yun Wang Xiao-Ming Yan Xiao-Wei Xu Qi-Dong Zhang Bao-Lin Zhao Issam El Hamouti Ce Hao Gao-Hong He 

作者机构：School of Petroleum and Chemical EngineeringState Key Laboratory of Fine ChemicalsDalian University of TechnologyPanjin 124221China School of Chemical EngineeringResearch and Development Center of Membrane Science and TechnologyDalian University of TechnologyDalian 116024China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学(英文版))

年 卷 期：2018年第36卷第1期

页      面：129-138页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Natural Science Foundation of China(No.21404018) Fundamental Research Funds for the Central Universities(No.DUT16RC(4)79) Education Department of the Liaoning Province(No.LT2015007) Fundamental Research Funds for the Central Universities(No.DUT16TD19) Chang Jiang Scholar Program(No.T2012049) 

主　　题：Anion exchange membrane High alkaline stability Benzimidazolium Polysulfone LUMO energy 

摘      要：The stability of anion exchange membranes(AEMs)is an important feature of alkaline exchange membrane fuel cells(AEMFCs),which has been extensively *** it remains a real challenge due to the harsh working ***,we developed a novel type of polysulfone-based AEMs with three modified 1,2-dimethylbenzimidazoliums containing different substitutes at C4-and *** results showed that the introduction of the substitutes could obviously improve the dimensional and alkaline stabilities of the corresponding *** swelling ratios of resultant AEMs were all lower than 10%after water *** membrane with 4,7-dimethoxy-1,2-dimethylbenzimidazolium group exhibited the highest alkaline *** 9.2%loss of hydroxide conductivity was observed after treating the membrane in 1 mol·L^(-1)KOH solution at 80°C for 336 ***,the density functional theory(DFT)study on the three functional group models showed that the substitutes at C4-and C7-position affected the lowest unoccupied molecular orbital(LUMO)energies of the different 1,2-dimethylbenzimidazolium groups.