Proton-conducting membranes based on benzimidazole-containing sulfonated poly(ether ether ketone) compared with their carboxyl acid form |
| |
Authors: | Hongtao Li Jing WuChengji Zhao Gang ZhangYang Zhang Ke ShaoDan Xu Haidan LinMiaomiao Han Hui Na |
| |
Affiliation: | Alan G MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, People''s Republic of China |
| |
Abstract: | A series of sulfonated poly(ether ether ketone) containing pendant carboxyl (C-SPEEKs) have been synthesized using a nucleophilic polycondesation reaction. A condensation reaction between 1,2-diaminobenzene and carboxyl resulted in a new series of copolymers containing benzimidazole groups (SPEEK-BIms). The expected structures of the sulfonated copolymers are confirmed by 1H NMR. The dependence of ion exchange capacity, water uptake, proton conductivity and methanol diffusion coefficient of SPEEK-BIm membranes has been studied and compared with their carboxyl acid form. The results suggest that the introduction of benzimidazole groups may be responsible for many excellent properties of the membranes for fuel cell. It is noticeable that the markedly improved oxidative stability is benefit for the application of membrane. |
| |
Keywords: | Sulfonated poly(ether ether ketone) Pendant Benzimidazole |
本文献已被 ScienceDirect 等数据库收录! |