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Enhancing Li Ion Battery Performance by Mechanical Resonance

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Title
Enhancing Li Ion Battery Performance by Mechanical Resonance
Author(s)
Dana Jin; Hyeonsoo Kang; Hyung Wan Do; Gwangmook Kim; Taehoon Kim; Sungsoon Kim; Sangjin Choi; Jongbum Won; Inchul Park; Keeyoung Jung; Wooyoung Shim
Publication Date
2021-06
Journal
NANO LETTERS, v.21, no.12, pp.5345 - 5352
Publisher
American Chemical Society
Abstract
© 2021 American Chemical Society.The quest for safe and high-performance Li ion batteries (LIBs) motivates intense efforts seeking a high-energy but reliable anode, cathode, and nonflammable electrolyte. For any of these, exploring new electrochemistry methods that enhance safety and performance by employing well-designed electrodes and electrolytes are required. Electrolyte wetting, governed by thermodynamics, is another critical issue in increasing Li ion transport through the separator. Herein, we report an approach to enhancing LIB performance by applying mechanical resonant vibration to increase electrolyte wettability on the separator. Wetting is activated at a resonant frequency with a capillary wave along the surface of the electrolyte, allowing the electrolyte to infiltrate into the porous separator by inertia force. This mechanical resonance, rather than electrochemistry, leads to the high specific capacity, rate capability, and cycling stability of LIBs. The concept of the mechanical approach is a promising yet simple strategy for the development of safer LIBs using liquid electrolytes.
URI
https://pr.ibs.re.kr/handle/8788114/10131
DOI
10.1021/acs.nanolett.1c01621
ISSN
1530-6984
Appears in Collections:
Center for Nanomedicine (나노의학 연구단) > 1. Journal Papers (저널논문)
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