Visualization of inhomogeneous current distribution on ZrO2-coated LiCoO2 thin-film electrodes using scanning electrochemical cell microscopy

Hirotaka Inomata; Yasufumi Takahashi; Daiko Takamatsu; Akichika Kumatani; Hiroki Ida; Hitoshi Shiku; Tomokazu Matsue

doi:10.1039/C8CC08916G

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Visualization of inhomogeneous current distribution on ZrO₂-coated LiCoO₂ thin-film electrodes using scanning electrochemical cell microscopy†

Hirotaka Inomata,^a Yasufumi Takahashi,

*^bc Daiko Takamatsu,^d Akichika Kumatani,^ae Hiroki Ida,^a Hitoshi Shiku^f and Tomokazu Matsue*^ae

Author affiliations

* Corresponding authors

^a Graduate School of Environmental Studies, Tohoku University, 6-6-11-604, Aramaki Aoba, Aoba-ku, Sendai 980-8579, Japan

^b Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
E-mail: yasufumi@se.kanazawa-u.ac.jp

^c Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), Saitama 332-0012, Japan

^d Research&Development Group, Hitachi, Ltd., Hitachi-shi, Ibaraki 319-1292, Japan

^e WPI-Advanced Institute for Materials Research (AIMR), Tohoku University, 2-1-1-509, Katahira, Aoba-ku, Sendai 980-8577, Japan

^f Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan

Abstract

Cathode surface coating with metal-oxide thin layers has been intensively studied to improve the cycle durability of lithium-ion batteries. A comprehensive understanding of the metal-oxide morphology and the local electrochemical properties is essential for figuring out the metal-oxide coating effect. In this study, scanning electrochemical cell microscopy (SECCM) is used to analyze the surface morphology with high spatial resolution, together with the local electrochemical properties.

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Article information

DOI: https://doi.org/10.1039/C8CC08916G
Article type: Communication
Submitted: 09 Nov 2018
Accepted: 07 Dec 2018
First published: 07 Dec 2018

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Chem. Commun., 2019,55, 545-548

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Visualization of inhomogeneous current distribution on ZrO₂-coated LiCoO₂ thin-film electrodes using scanning electrochemical cell microscopy

H. Inomata, Y. Takahashi, D. Takamatsu, A. Kumatani, H. Ida, H. Shiku and T. Matsue, Chem. Commun., 2019, 55, 545 DOI: 10.1039/C8CC08916G

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