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Updated: Sep 15, 2025

In Situ Lithiated Reference Electrode: Four Electrode Design for In-operando Impedance Spectroscopy
Published on: September 12, 2018
Operando Raman spectroscopy for investigating lithium deposition/dissolution and diffusion at the microelectrode
Hayate Mukofukasawa1, Koji Hiraoka1, Shiro Seki1
1Graduate School of Applied Chemistry and Chemical Engineering, Kogakuin University 2665-1 Nakano-machi Hachioji-shi Tokyo 192-0015 Japan shiro-seki@cc.kogakuin.ac.jp.
Abstract:
We developed an operando Raman spectroscopy method to visualize lithium deposition and diffusion at the microelectrode interface. Lithium deposition released free EC and FSA, while dissolution promoted rapid Li+ coordination. The estimated diffusion layer thickness matched theoretical predictions, highlighting micro-Raman spectroscopy's potential for studying lithium-ion battery interfaces.

