Tomographical analysis of electrochemical lithiation and delithiation of LiNi₀.₆Co₀.₂Mn₀.₂O₂ cathodes in all-solid-state batteries

Choi, Sungjun; Yun, Bin-Na; Jung, Wo Dum; Kim, Tae Hyun; Chung, Kyung-Yoon; Son, Ji-Won; Sang, Byoung-In; Jung, Hun-Gi; Kim, Hyoungchul

doi:10.1016/j.scriptamat.2019.02.005

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Tomographical analysis of electrochemical lithiation and delithiation of LiNi₀.₆Co₀.₂Mn₀.₂O₂ cathodes in all-solid-state batteries

Choi, Sungjun;
Yun, Bin-Na;
Jung, Wo Dum;
Kim, Tae Hyun;
Chung, Kyung-Yoon;
... Sang, Byoung-In;
외 3명

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초록

We demonstrated the use of three-dimensional (3D) atom-probe tomography (AM) for analyzing the electro-chemical lithiation/delithiation in the composite cathodes of all-solid-state batteries (ASSBs). 3D APT provides direct determination of the Li-ion contents, having difficult by X-ray excitation. Compared with various cathodes, they showed a significant variation in the Li-ion concentration during lithiation/delithiation because of the poor solid-to-solid interfaces, which is an inherent problem in ASSBs. In addition, the loss of transition-metal content was quantitatively verified. We have confirmed that our APT can be effectively applied to ASSB systems and it would be provide a deeper understanding of electrochemistry in ASSBs.

키워드

Atom probe tomography; Lithiation; Delithiation; All-solid-state battery; Cathode active material; LITHIUM-ION BATTERIES; CAPACITY FADE; LICOO2; BULK; STABILITY; ELECTRODE; OXIDE; RICH

제목: Tomographical analysis of electrochemical lithiation and delithiation of LiNi₀.₆Co₀.₂Mn₀.₂O₂ cathodes in all-solid-state batteries

저자: Choi, Sungjun; Yun, Bin-Na; Jung, Wo Dum; Kim, Tae Hyun; Chung, Kyung-Yoon; Son, Ji-Won; Sang, Byoung-In; Jung, Hun-Gi; Kim, Hyoungchul

DOI: 10.1016/j.scriptamat.2019.02.005

발행일: 2019-05

유형: Article

저널명: Scripta Materialia

권: 165

페이지: 10 ~ 14

언어: ENG

출판사: PERGAMON-ELSEVIER SCIENCE LTD

발행국가: 영국

분량: 5 페이지

ISSN: P 1359-6462