Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Feature: Functional Ceramics for Energy Conversion and Storage Devices: Full papers
Visualization of the reaction distribution in a composite cathode for an all-solid-state lithium-ion battery
Mahunnop FAKKAOKazuki CHIBAYuta KIMURATakashi NAKAMURAToyoki OKUMURAKiyofumi NITTAYasuko TERADAYoshiharu UCHIMOTOKoji AMEZAWA
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2017 Volume 125 Issue 4 Pages 299-302

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Abstract

In this work, we directly observed the reaction distribution formed in a composite cathode of the all-solid-state lithium-ion battery (ASSLIB) LiCoO2/Li2.2C0.8B0.2O3|Li2.2C0.8B0.2O3|PEO|Li during charging by using the two-dimensional X-ray absorption spectroscopy (2D-XAS) at Co K-edge. The two-dimensional mapping of the state of charge in a composite cathode indicated that the reaction distribution was formed during charging process in the in-plane direction due to the disconnection in electron pathway at cracks. It was experimentally confirmed that the 2D-XAS technique was a useful tool for evaluating the reaction distribution in a composite cathode of an ASSLIB and investigating the influence factors for the formation of the reaction distribution.

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© 2017 The Ceramic Society of Japan
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