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Thermal-Gated Polymer Electrolytes for Smart Zinc-Ion Batteries.
Zhu, Jiacai; Yao, Minjie; Huang, Shuo; Tian, Jinlei; Niu, Zhiqiang.
Afiliação
  • Zhu J; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
  • Yao M; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
  • Huang S; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
  • Tian J; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
  • Niu Z; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China.
Artigo em Inglês | MEDLINE | ID: mdl-32543738
ABSTRACT
Smart self-protection is essential for addressing safety issues of energy-storage devices. However, conventional strategies based on sol-gel transition electrolytes often suffer from unstable self-recovery performance. Herein, smart separators based on thermal-gated poly(N-isopropylacrylamide) (PNIPAM) hydrogel electrolytes were developed for rechargeable zinc-ion batteries (ZIBs). Such PNIPAM-based separators not only display a pore structure evolution from opened to closed states, but also exhibit a surface wettability transition from hydrophilic to hydrophobic behaviors when the temperature rises. This behavior can suppress the migration of electrolyte ions across the separators, realizing the self-protection of ZIBs at high temperatures. Furthermore, the thermal-gated behavior is highly reversible, even after multiple heating/cooling cycles, because of the reversibility of temperature-dependent structural evolution and hydrophilic/hydrophobic transition. This work will pave the way for designing thermal-responsive energy-storage devices with safe and controlled energy delivery.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Ano de publicação: 2020 Tipo de documento: Artigo