Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 13, Pages 4313-4317Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201814653
Keywords
electrolytes; hydrogels; self-healing; zinc-ion batteries
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Funding
- National Natural Science Foundation of China [21573116, 51822205]
- Ministry of Science and Technology of China [2017YFA0206701]
- Ministry of Education of China [B12015]
- Young Thousand Talents Program
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The self-healing of zinc-ion batteries (ZIBs) will not only significantly improve the durability and extend the lifetime of devices, but also decrease electronic waste and economic cost. A poly(vinyl alcohol)/zinc trifluoromethanesulfonate (PVA/Zn(CF3SO3)(2)) hydrogel electrolyte was fabricated by a facile freeze/thaw strategy. PVA/Zn(CF3SO3)(2) hydrogels possess excellent ionic conductivity and stable electrochemical performance. Such hydrogel electrolytes can autonomously self-heal by hydrogen bonding without any external stimulus. All-in-one integrated ZIBs can be assembled by incorporating the cathode, separator, and anode into hydrogel matrix since the fabrication of PVA/Zn(CF3SO3)(2) hydrogel is a process of converting the liquid to quasi-solid state. The ZIBs show an outstanding self-healing and can recover electrochemical performance completely even after several cutting/healing cycles.
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