Flexible all-in-one zinc-ion batteries

The recent development of flexible and wearable electronic devices has increased the demand for energy storage devices with excellent flexibility and structural stability. Aqueous zinc-ion batteries (ZIBs) are promising energy storage devices due to their low cost, high safety, and eco-friendliness....

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Bibliographic Details
Published in:Nanoscale 2019-10, Vol.11 (38), p.1763-17636
Main Authors: Zhang, Yan, Wang, Qingrong, Bi, Songshan, Yao, Minjie, Wan, Fang, Niu, Zhiqiang
Format: Article
Language:English
Subjects:
Anodes
Batteries
Cathodes
Continuous casting
Electronic devices
Energy storage
Flexibility
Graphene
Hydrazines
Image compression
Interfacial strength
Nanofibers
Polyanilines
Scanning electron microscopy
Separators
Storage batteries
Structural stability
Zinc
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Summary:The recent development of flexible and wearable electronic devices has increased the demand for energy storage devices with excellent flexibility and structural stability. Aqueous zinc-ion batteries (ZIBs) are promising energy storage devices due to their low cost, high safety, and eco-friendliness. Therefore, flexible ZIBs have to be considered. Herein, we design the flexible all-in-one ZIBs, where the reduced graphene oxide/polyaniline (rGO/PANI) cathode, cellulose nanofiber (CNF) separator, and exfoliated graphene (EG)/Zn anode are integrated together using an all-freeze-casting strategy. The continuous seamless connection of such all-in-one ZIBs can avoid displacing and detaching between the electrodes and separator under different bending states and improve the load-transfer capacity and interface strength between the neighboring component layers. As a result, the all-in-one ZIBs show excellent flexibility and superior electrochemical stability under different bending states. Flexible all-in-one ZIBs exhibit excellent physical flexibility and stable electrochemical performance under different mechanical deformations.
ISSN:2040-3364
2040-3372
DOI:10.1039/c9nr06476a