Journal
SMALL SCIENCE
Volume 3, Issue 5, Pages -Publisher
WILEY
DOI: 10.1002/smsc.202200104
Keywords
anti-freezing capability; environmental adaptation; flexible devices; mechanical strength; organo-hydrogel electrolytes
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With the increasing demand for portable electronics, flexible aqueous energy storage devices have gained significant interest. Organo-hydrogels, crosslinked amphiphilic polymers filled with organic solvents and water, are considered as ideal electrolyte candidates due to their environmental adaptation. This review discusses the composition, preparation methods, and properties of organo-hydrogel electrolytes, highlighting their application in supercapacitors and Zn-based batteries under harsh conditions. The current challenges and future development directions of organo-hydrogel electrolytes for flexible energy storage are also discussed.
With growing demands for portable electronics, flexible aqueous energy storage devices such as supercapacitors and Zn-based batteries have drawn tremendous interest from both academic and industrial fields. Organo-hydrogels, crosslinked amphiphilic polymers filled with organic solvents and water, are regarded as an ideal electrolyte candidate for portable electronic applications, especially due to their superior environmental adaptation. Organo-hydrogels can reserve the advantages of the corresponding hydrogels and achieve some unique features such as broad temperature tolerance, high mechanical stability, strong interfacial interaction, and decent ionic conductivity. This review outlines the composition fundamentals, preparation methods, and comprehensive properties of reported organo-hydrogel electrolytes. In particular, supercapacitors and Zn-based batteries that operate under harsh temperature conditions and unusual mechanical deformations endowed by organo-hydrogel electrolytes are further highlighted. Moreover, a unique perspective on the current challenges and future development directions of the organo-hydrogel electrolytes for flexible energy storage is also provided.
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