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Published in: Cellulose 18/2021

28-10-2021 | Original Research

Self-chargeable zinc-ion hybrid supercapacitor driven by salt-concentrated cellulose hydrogel

Authors: Lvye Yang, Jingqiu Li, Pengcheng Zhang, Jianhao Qiu, Yi Feng, Mengjue Cao, Jianfeng Yao

Published in: Cellulose | Issue 18/2021

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Abstract

The energy storage devices working without electrical grid are attractive for expanding the range of human activities. By using ZnCl2-concentrated cellulose hydrogel as electrolyte, a carbon-based zinc-ion hybrid supercapacitor (ZHS) gains a self-charging ability. The exhausted ZHS will spontaneously recover the discharge capacity by being exposed to air. After repeated “air charging”, the self-charging ability can be reactivated by charging the ZHS to 2.1 V with an external power supply. The ZHS is reliable at a high operating voltage of 2.1 V with a capacity retention of 70.9% after 2000 charge/discharge cycles. The self-chargeable ZHS is convenient for practical application because the cellulose hydrogel is stable in air as well as flexible and sustainable. This work provides new insights into the off-grid charging technologies.

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Appendix
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Literature
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Metadata
Title
Self-chargeable zinc-ion hybrid supercapacitor driven by salt-concentrated cellulose hydrogel
Authors
Lvye Yang
Jingqiu Li
Pengcheng Zhang
Jianhao Qiu
Yi Feng
Mengjue Cao
Jianfeng Yao
Publication date
28-10-2021
Publisher
Springer Netherlands
Published in
Cellulose / Issue 18/2021
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-04278-8

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