Tomographical analysis of electrochemical lithiation and delithiation of LiNi0.6Co0.2Mn0.2O2 cathodes in all-solid-state batteries. (May 2019)

• Record Type: Journal Article
• 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
• Is Part Of: Scripta materialia. Number 165(2019)
• Page Start: 10
• Page End: 14
• Publication Date: 2019-05
• Subjects: Atom probe tomography -- Lithiation -- Delithiation -- All-solid-state battery -- Cathode active material; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.02.005
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: We demonstrated the use of three-dimensional (3D) atom-probe tomography (APT) for analyzing the electrochemical 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. Graphical abstract: Unlabelled Image