Guanidimidazole-quanternized and cross-linked alkaline polymer electrolyte membrane for fuel cell application

Cheng, Jie (author): School of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals

Yang, Guoqing (author): School of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals

Zhang, Kuibu (author): School of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals

He, Gaohong (author): School of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals

Jia, Jia (author): Division of Fuel Cells, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian

Yu, Hongmei (author): Division of Fuel Cells, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian

Li, Lingdong (author): School of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals

Hao, Ce (author): School of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals

Zhang, Fengxiang (author): School of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals

(creator_code:org_t)

Elsevier BV, 2016
2016
English.
In: Journal of Membrane Science. - : Elsevier BV. - 0376-7388 .- 1873-3123. ; 501, s. 100-108

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

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 H2/O2 fuel cell using the synthesized membrane showed a peak power density of 39 mW cm−2 at 50 °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.

By the author/editor: Cheng, Jie; Yang, Guoqing; Zhang, Kuibu; He, Gaohong; Jia, Jia; Yu, Hongmei; show more...; Gai, Fangyuan; Li, Lingdong; Hao, Ce; Zhang, Fengxiang; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Other Materials ...

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