Molecularly Tailored Lithium-Arene Complex Enables Chemical Prelithiation of High ­Capacity Lithium­Ion Battery Anodes

Title
Molecularly Tailored Lithium-Arene Complex Enables Chemical Prelithiation of High ­Capacity Lithium­Ion Battery Anodes
Authors
정향수홍지현이민아강인영장주영최진관이경우
Issue Date
2020-08
Publisher
Angewandte Chemie international edition
Citation
VOL 59, NO 34-14480
Abstract
Prelithiation is of great interest to Li‐ ion battery manufacturers as a strategy for compensating for the loss of active Li during initial cycling of a battery, which would otherwise degrade its available energy density. Solution‐ based chemical prelithiation using a reductive chemical promises unparalleled reaction homogeneity and simplicity. However, the chemicals applied so far cannot dope active Li in Si‐ based high‐ capacity anodes but merely form solid– electrolyte interphases, leading to only partial mitigation of the cycle irreversibility. Herein, we show that a molecularly engineered Li– arene complex with a sufficiently low redox potential drives active Li accommodation in Si‐ based anodes to provide an ideal Li content in a full cell. Fine control over the prelithiation degree and spatial uniformity of active Li throughout the electrodes are achieved by managing time and temperature during immersion, promising both fidelity and low cost of the process for large‐ scale integration.
URI
https://pubs.kist.re.kr/handle/201004/71679
ISSN
1433-7851
Appears in Collections:
KIST Publication > Article
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