中国化学快报(英文版)2024，Vol.35Issue(4) ：43-51.DOI:10.1016/j.cclet.2023.109261

Modification strategies for non-aqueous,highly proton-conductive benzimidazole-based high-temperature proton exchange membranes

Yunfa Dong Shijie Zhong Yuhui He Zhezhi Liu Shengyu Zhou Qun Li Yashuai Pang Haodong Xie Yuanpeng Ji Yuanpeng Liu Jiecai Han Weidong He
中国化学快报(英文版)2024，Vol.35Issue(4) ：43-51.DOI:10.1016/j.cclet.2023.109261
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Modification strategies for non-aqueous,highly proton-conductive benzimidazole-based high-temperature proton exchange membranes

Yunfa Dong 1Shijie Zhong 1Yuhui He 1Zhezhi Liu 2Shengyu Zhou 1Qun Li 1Yashuai Pang 3Haodong Xie 1Yuanpeng Ji 4Yuanpeng Liu 1Jiecai Han 1Weidong He5
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作者信息

  • 1. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,and Center for Composite Materials and Structures,Harbin Institute of Technology,Harbin 150080,China
  • 2. School of Petroleum Engineering,Chongqing University of Science and Technology,Chongqing 401331,China
  • 3. School of Physics,University of Electronic Science and Technology of China,Chengdu 610054,China
  • 4. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,China;Chongqing Research Institute,Harbin Institute of Technology,Chongqing 401151,China
  • 5. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,and Center for Composite Materials and Structures,Harbin Institute of Technology,Harbin 150080,China;Chongqing Research Institute,Harbin Institute of Technology,Chongqing 401151,China;School of Mechanical Engineering,Chengdu University,Chengdu 610106,China
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Abstract

High-temperature proton exchange membranes(HT-PEMs)possess excellent thermal and outstanding electrochemical stability,providing an avenue to realize high-temperature proton exchange membranes fuel cells(HT-PEMFCs)with both superior power density and long-term durability.Unfortunately,poly-benzimidazole(PBI),a typical material for conventional HT-PEMs,fails to compromise the high non-aqueous proton conductivity and high mechanical properties,thus hindering their practical applications.Achieving efficient nonaqueous proton conduction is crucial for HT-PEMFC,and many insightful research works have been done in this area.However,there still lacks a report that integrates the host-guest in-teractions of phosphoric acid doping and the structural stability of polymers to systematically illustrate modification strategies.Here,we summarize recent advancements in enhancing the nonaqueous proton conduction of HT-PEMs.Various polymer structure modification strategies,including main chain and side group modification,cross-linking,blocking,and branching,are reviewed.Composite approaches of poly-mer,including compounding with organic porous polymers,filling the inorganic components and mod-ifying with ionic liquids,etc.,are also covered in this work.These strategies endow the HT-PEMs with more free volume,nanophase-separated structure,and multi-stage proton transfer channels,which can facilitate the proton transportation and improve their performance.Finally,current challenges and future directions for further enhancements are also outlined.

Key words

Benzimidazole/Nonaqueous proton conduction/Free volume/Nanophase-separated structure/Structure modification

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基金项目

Science Foundation of Na-tional Key Laboratory of Science and Technology on Advanced Composites in Special Environments()

国家自然科学基金(12002109)

重庆市自然科学基金(CSTC2021jcyj-msxmX10305)

重庆市自然科学基金(CSTB2022NSCQ-MSX0246)

重庆市自然科学基金(CSTB2022NSCQ-MSX0242)

重庆市自然科学基金(CSTB2022NSCQ-MSX1244)

重庆市自然科学基金(CSTB2022NSCQ-)

Chongqing Technology Innovation and Application Development Special Key Project(CSTB2023TIAD-KPX0010)

出版年

2024
中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCDCSCD
影响因子：0.771
ISSN：1001-8417
参考文献量103
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