Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 23, 2020
Previous Article Next Article

Reaction uniformity visualized by Raman imaging in the composite electrode layers of all-solid-state lithium batteries

Author affiliations

Abstract

The reaction uniformity of LiCoO2 composite positive electrodes in all-solid-state cells was compared quantitatively by investigating the Raman band shifts corresponding to the state-of-charge (SOC) of LiCoO2. The quantitative SOC analysis was conducted using the Raman imaging data of composite electrodes with smaller or larger solid electrolytes. The electrodes exhibited different reaction uniformity although the cells showed similar initial charge capacities and average SOC. In the case of larger solid electrolytes, most LiCoO2 particles showed higher or lower SOC than the average SOC, and lower battery performance. The quantitative analysis of SOC in each LiCoO2 electrode demonstrated that a variable SOC outside the average SOC resulted in larger irreversible capacity and lower rate performance. The quantitative SOC analysis newly developed in the present study is a useful technique for designing composite electrodes showing higher battery performance.

Graphical abstract: Reaction uniformity visualized by Raman imaging in the composite electrode layers of all-solid-state lithium batteries

Back to tab navigation

Supplementary files

Article information


Submitted
30 Jan 2020
Accepted
11 May 2020
First published
11 May 2020

Phys. Chem. Chem. Phys., 2020,22, 13271-13276
Article type
Paper

Reaction uniformity visualized by Raman imaging in the composite electrode layers of all-solid-state lithium batteries

M. Otoyama, Y. Ito, A. Sakuda, M. Tatsumisago and A. Hayashi, Phys. Chem. Chem. Phys., 2020, 22, 13271
DOI: 10.1039/D0CP00508H

Social activity

Search articles by author

Spotlight

Advertisements