抄録
A terahertz chemical microscope has been developed to visualize electric
potential distribution on lithium ion battery cathodes during battery
operation. A sensing plate comprising a Si film grown epitaxially on a
sapphire substrate was used as a terahertz emitter. The amplitude of
terahertz radiation from the sensing plate could be related to the
electric potential at the exact point where a femtosecond laser
illuminated. Here, the sensing plate was integrated into a conventional
can-type lithium ion battery and terahertz radiation from the sensing
plate was observed during battery operation between 2.7 and 4.2 V. By
scanning the laser, the distribution of terahertz amplitude radiated
from the sensing plate was observed, which could be related to the
electric potential distribution on the electrodes of the batteries.
Localized electric potential could be visualized as the amplitude of
terahertz radiation generated in the sensing plate, which was integrated
beneath the battery electrode.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 430-437 |
| ジャーナル | Journal of Infrared, Millimeter, and Terahertz Waves |
| 巻 | 41 |
| 号 | 4 |
| DOI | |
| 出版ステータス | Published - 11月 1 2019 |
| 外部発表 | はい |
ASJC Scopus subject areas
- 放射線
- 器械工学
- 凝縮系物理学
- 電子工学および電気工学
UN SDG
この成果は、次の持続可能な開発目標に貢献しています
