Recent advances of hydrogel electrolytes in flexible energy storage devices

Novel flexible storage devices such as supercapacitors and rechargeable batteries are of great interest due to their broad potential applications in flexible electronics and implants. Hydrogels are crosslinked hydrophilic polymer networks filled with water, and considered one of the most promising e...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2021-01, Vol.9 (4), p.243-269
Main Authors: Chan, Cheuk Ying, Wang, Ziqi, Jia, Hao, Ng, Pui Fai, Chow, Lung, Fei, Bin
Format: Article
Language:English
Subjects:
Batteries
Devices
Electrochemical analysis
Electrochemistry
Electrochromism
Electrolytes
Energy storage
Flexible components
Hydrogels
Polymers
Rechargeable batteries
Service life
Softness
Storage batteries
Stretchability
Supercapacitors
Water absorption
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Summary:Novel flexible storage devices such as supercapacitors and rechargeable batteries are of great interest due to their broad potential applications in flexible electronics and implants. Hydrogels are crosslinked hydrophilic polymer networks filled with water, and considered one of the most promising electrolyte candidates due to their high-water absorbency and softness that fulfilled the fundamental requirements for flexible energy storage devices. Moreover, diverse properties such as self-healing ability, ultra-stretchability, electrochromism, and extreme-temperature resistance can be achieved by modifying the chemical structures, opening the door to the development of novel flexible energy storage devices with prolonged service life and scintillating functions. In this review, we discuss the design methods of recent hydrogel electrolytes for supercapacitors and batteries regarding their electrochemical performance and highlight those with exceptional breakthrough and additional functions. Finally, challenges and prospects of future development are explored. Review on the recent advances of gel polymer electrolytes in flexible energy storage devices and their additional functions.
ISSN:2050-7488
2050-7496
DOI:10.1039/d0ta09500a