DataVXACS Applied Energy MaterialsPaper
journal article·2023-08-14

Comprehensive Operando Visualization of the Electrochemical Events in the Cathode/Anode Layers in Thin-Film-Type All-Solid-State Lithium-Ion Batteries

Nozomu Ishiguro, Tsutomu Totsuka, Hideshi Uematsu, Oki Sekizawa, Kazuo Yamamoto, Yasutoshi Iriyama, Yukio Takahashi

ACS Applied Energy Materials· Volume 6· Issue 15
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Source abstract

Abstract

The spatially resolved and quantitative observation and analysis of an all-solid-state lithium-ion battery (ASSLiB) under operating conditions play an important role in understanding the reaction or degradation mechanisms of the battery system. In this study, the chemical state distribution of a LiCoO 2 cathode and Fe 2 (MoO 4 ) 3 anode layers in a thin-film-type ASSLiB under operating conditions is visualized in the single field of view from a cross-sectional direction using full-field transmission microscopy with X-ray absorption fine structure spectroscopy. Operando measurements during stepped charge/discharging processes revealed the different tendencies of the redox percolation of Co and Fe in the cathode and anode layers, respectively, during the charging/discharging process according to the difference in their lithiation/delithiation mechanisms. We also determine that structural and chemical degradation occurs in both layers after repeating charge–discharge cycling. In the cathode layer, the electrode is exfoliated and the Co in the entire layer becomes more oxidized after degradation, while in the anode layer, Fe 2 (MoO 4 ) 3 decomposes into γ-Fe 2 O 3 and causes the layer to crack.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Technologies Research · Advanced Battery Materials and Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

International Center for Synchrotron Radiation Innovation Smart (SRIS) & Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku Sendai 980-8577, Japan

RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan

Department of Metallurgy, Graduate School of Engineering, Tohoku University, Aoba-yama 02, Aoba-ku Sendai 980-8579, Japan

Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan

Nanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku, Nagoya 456-8587, Japan

Department of Materials Design Innovation Engineering, Graduate School of Engineering, Nagoya University, Furo, Chikusa-ku, Nagoya, Aichi 464-8602, Japan

Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Funding

Japan Society for the Promotion of Science · Iketani Science and Technology Foundation

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