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Tomographical analysis of electrochemical lithiation and delithiation of LiNi₀.₆Co₀.₂Mn₀.₂O₂ cathodes in all-solid-state batteries
- Authors
- 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
- Issue Date
- May-2019
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Atom probe tomography; Lithiation; Delithiation; All-solid-state battery; Cathode active material
- Citation
- SCRIPTA MATERIALIA, v.165, pp.10 - 14
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCRIPTA MATERIALIA
- Volume
- 165
- Start Page
- 10
- End Page
- 14
- ISSN
- 1359-6462
- Abstract
- 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.
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Related Researcher
- Sang, Byoung-In
- COLLEGE OF ENGINEERING (DEPARTMENT OF CHEMICAL ENGINEERING)