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

Soo Yeong Hong, Sung Min Jee, Youngpyo Ko, Jinhan Cho, Keun Hyung Lee, Bongjun Yeom, Heesuk Kim, Jeong Gon Son

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

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/long-term stabilities in the air even with wearing and pulling.

Original languageEnglish
Pages (from-to)2271-2281
Number of pages11
JournalACS nano
Volume16
Issue number2
DOIs
Publication statusPublished - 2022 Feb 22

Bibliographical note

Funding Information:
We gratefully acknowledge financial support from the Korea Institute of Science and Technology (KIST) and KU-KIST Institutional Program (project No. 2E31811 and 2V06630) and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (2019R1A2C2005657, 2021R1C1C2007738, and 2022R1A2B5B02001597). In addition, the Creative Materials Discovery Program also supported this work through the NRF grant funded by the Ministry of Science and ICT (2020M3D1A1110499, 2020M3D1A2101799, and 2020M3D1A2101800).

Publisher Copyright:
© 2022 American Chemical Society

Keywords

  • all-component intrinsically stretchable battery
  • physically cross-linked organogels
  • printing on stretch fabric
  • stretchable current collector
  • stretchable lithium-ion battery

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy

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