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

Cheng, JieSchool of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals (författare)

Validerad; 2016; Nivå 2; 20151210 (andbra)
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.

Yang, GuoqingSchool of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals (författare)
Zhang, KuibuSchool of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals (författare)
He, GaohongSchool of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals (författare)
Jia, JiaDivision of Fuel Cells, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian (författare)
Yu, HongmeiDivision of Fuel Cells, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian (författare)
Gai, FangyuanLuleå tekniska universitet,Materialvetenskap(Swepub:ltu)fangai (författare)
Li, LingdongSchool of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals (författare)
Hao, CeSchool of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals (författare)
Zhang, FengxiangSchool of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals (författare)
School of Chemical and Petroleum Engineering, Dalian University of Technology, State Key Laboratory of Fine ChemicalsDivision of Fuel Cells, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian (creator_code:org_t)

Ingår i:Journal of Membrane Science: Elsevier BV501, s. 100-1080376-73881873-3123

Av författaren/redakt...: Cheng, Jie; Yang, Guoqing; Zhang, Kuibu; He, Gaohong; Jia, Jia; Yu, Hongmei; visa fler...; Gai, Fangyuan; Li, Lingdong; Hao, Ce; Zhang, Fengxiang; visa färre...

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