[9a-PB4-1~27] 12.4 Organic light-emitting devices, organic transistors, and flexible devices

[9a-PB4-10] Application of Extended Time Domain Reflectometry on Electrochemical System

Yuto Ishimatsu¹, Rikuto Matsumoto¹, Yuto Inoue¹, Ryuya Inakawa¹, Takakazu Koyama¹, Ruoxue Zhang¹, Tatsuya Omori¹, 〇Masatoshi Sakai¹ (1.Chiba Univ.)

Keywords:

extended time domain reflectometry,Li ion battery,transient impedance

Extended time-domain reflectometry (ExTDR), which has been used for analyzing carrier dynamics in organic electronic devices, was applied to lithium-ion battery cells to perform time-resolved measurements of transient impedance during the charging process over a broad time range from 10 ns to 100 ms. The results revealed detailed electrochemical processes, including a significant difference in electric double-layer formation times between the cathode and anode. These findings demonstrate that the proposed method is also effective for dynamical analysis of electrochemical reactions.