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Recent Development of Flexible and Stretchable Supercapacitors Using Transition Metal Compounds as Electrode Materials

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Title
Recent Development of Flexible and Stretchable Supercapacitors Using Transition Metal Compounds as Electrode Materials
Author(s)
Lyu, Lulu; Wytse Hooch Antink; Young Seong Kim; Kim, Chae Won; Taeghwan Hyeon; Piao, Yuanzhe
Publication Date
2021-09
Journal
SMALL, v.17, no.36
Publisher
John Wiley and Sons Inc
Abstract
© 2021 Wiley-VCH GmbHFlexible and stretchable supercapacitors (FS-SCs) are promising energy storage devices for wearable electronics due to their versatile flexibility/stretchability, long cycle life, high power density, and safety. Transition metal compounds (TMCs) can deliver a high capacitance and energy density when applied as pseudocapacitive or battery-like electrode materials owing to their large theoretical capacitance and faradaic charge-storage mechanism. The recent development of TMCs (metal oxides/hydroxides, phosphides, sulfides, nitrides, and selenides) as electrode materials for FS-SCs are discussed here. First, fundamental energy-storage mechanisms of distinct TMCs, various flexible and stretchable substrates, and electrolytes for FS-SCs are presented. Then, the electrochemical performance and features of TMC-based electrodes for FS-SCs are categorically analyzed. The gravimetric, areal, and volumetric energy density of SC using TMC electrodes are summarized in Ragone plots. More importantly, several recent design strategies for achieving high-performance TMC-based electrodes are highlighted, including material composition, current collector design, nanostructure design, doping/intercalation, defect engineering, phase control, valence tuning, and surface coating. Integrated systems that combine wearable electronics with FS-SCs are introduced. Finally, a summary and outlook on TMCs as electrodes for FS-SCs are provided.
URI
https://pr.ibs.re.kr/handle/8788114/10775
DOI
10.1002/smll.202101974
ISSN
1613-6810
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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