个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 大连理工大学膜科学与技术研究开发中心主任
性别:女
毕业院校:中国科学院大连化物所
学位:博士
所在单位:化工学院
学科:化学工程. 膜科学与技术. 生物医学工程
联系方式:hgaohong@dlut.edu.cn
电子邮箱:hgaohong@dlut.edu.cn
Guanidimidazole-quanternized and cross-linked alkaline polymer electrolyte membrane for fuel cell application
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论文类型:期刊论文
第一作者:Cheng, Jie
通讯作者:Zhang, FX (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Sch Chem & Petr Engn, 2 Dagong Rd, Liaodongwan New Dist 124221, Panjin, Peoples R China.
合写作者:Zhang, Fengxiang,Yang, Guoqing,Zhang, Kuibo,He, Gaohong,Jia, Jia,Yu, Hongmei,Gai, Fangyuan,Li, Lingdong,Hao, Ce
发表时间:2016-03-01
发表刊物:JOURNAL OF MEMBRANE SCIENCE
收录刊物:SCIE、EI
卷号:501
页面范围:100-108
ISSN号:0376-7388
关键字:Resonance-enhanced cation; Anion exchange membrane; Alkaline stability; Swelling resistance; LUMO energy
摘要:A modified imidazole, namely guanidimidazole (Gim) was designed and synthesized as a novel quaternizing- and cross-linking agent for alkaline polymer electrolyte membrane fabrication. The resulting membrane was more alkali tolerant and swelling resistant than that quaternized purely by 1-methylimidazole owing to the enhanced resonance and cross-linking ability of Gim, the former confirmed by a LUMO (lowest unoccupied molecular orbital) energy calculation. The membrane also showed good ionic conductivity, mechanical strength and thermal stability. A H-2/O-2 fuel cell using the synthesized membrane showed a peak power density of 39 mW cm(-2) at 50 degrees C. This work preliminarily demonstrates the beneficial effect of imidazole modification by both experimental and computational investigation; it provides a new cation design strategy that may potentially achieve simultaneous improvement of alkali stability and swelling resistance of alkaline electrolyte membranes. (C) 2015 Elsevier B.V. All rights reserved.