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Intrinsically Stretchable and Printable Lithium-Ion Battery for Free-Form Configuration

Authors
Hong, Soo YeongJee, Sung MinKo, YoungpyoCho, JinhanLee, Keun HyungYeom, BongjunKim, HeesukSon, Jeong Gon
Issue Date
22-2월-2022
Publisher
AMER CHEMICAL SOC
Keywords
stretchable lithium-ion battery; physically cross-linked organogels; stretchable current collector; all-component intrinsically stretchable battery; printing on stretch fabric
Citation
ACS NANO, v.16, no.2, pp.2271 - 2281
Indexed
SCIE
SCOPUS
Journal Title
ACS NANO
Volume
16
Number
2
Start Page
2271
End Page
2281
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/137598
DOI
10.1021/acsnano.1c08405
ISSN
1936-0851
Abstract
For next-generation wearable and implantable devices, energy storage devices should be soft and mechanically deformable and easily printable on any substrate or active devices. Herein, we introduce a fully stretchable lithium-ion battery system for free-form configurations in which all components, including electrodes, current collectors, separators, and encapsulants, are intrinsically stretchable and printable. The stretchable electrode acquires intrinsic stretchability and improved interfacial adhesion with the active materials via a functionalized physically cross-linked organogel as a stretchable binder and separator. Intrinsically stretchable current collectors are fabricated in the form of nanocomposites consisting of a matrix with excellent barrier properties without swelling in organic electrolytes and nanostructure-controlled multimodal conductive fillers. Due to structural and materials freedoms, we successfully fabricate several types of stretchable lithium-ion battery that reliably operates under various stretch deformations with capacity and rate capability comparable with a nonstretchable battery over 2.5 mWh cm(-2) at 0.5 C, even under high mass loading conditions over 10 mg cm(-2), including stacked configuration, direct integration on both sides of a stretch fabric, and application of various electrode materials and electrolytes. Especially, our stretchable battery printed on a stretch fabric also exhibits high performance and stretch/longterm stabilities in the air even with wearing and pulling.
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Cho, Jin han
공과대학 (화공생명공학과)
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