BROWSE

Related Scientist

CMSD's photo.

CMSD
분자 분광학 및 동력학 연구단
more info

ITEM VIEW & DOWNLOAD

Lithium-Ion Solvation Structure in Organic Carbonate Electrolytes at Low Temperatures

Cited 0 time in webofscience Cited 0 time in scopus
67 Viewed 0 Downloaded
Title
Lithium-Ion Solvation Structure in Organic Carbonate Electrolytes at Low Temperatures
Author(s)
Yeongseok Chae; Chaiho Lim; Jonggu Jeon; Minju Kim; Lee, Kyung-Koo; Kyungwon Kwak; Minhaeng Cho
Publication Date
2022-08
Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, v.13, no.33, pp.7881 - 7888
Publisher
AMER CHEMICAL SOC
Abstract
Lithium-ion batteries face insufficient capacity at low temperatures. The lithium-ion desolvation process in the vicinity of a solid electrolyte interphase (SEI) layer is considered the major problem. Thus, an accurate determination of lithium-ion solvation structures is a prerequisite for understanding this process. Here, using a cryostat combined with an FTIR spectrometer, we found that as the temperature decreased, the number of coordinating carbonates in the first solvation shell of the lithium ion increased with a decreased population of the contact ion pair (CIP). More specifically, we found that two or more carbonate molecules replace a single PF6- anion upon CIP dissociation. This experimental finding shows that the prevailing notion that four carbonate molecules coordinate each lithium ion to form a tetrahedral structure is invalid for describing lithium-ion solvation structures. We anticipate that the present work will elucidate one of the molecular origins behind the low performance of lithium-ion batteries at low temperatures.
URI
https://pr.ibs.re.kr/handle/8788114/12344
DOI
10.1021/acs.jpclett.2c02106
ISSN
1948-7185
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse