In-operando quantitation of Li concentration for commercial Li-ion rechargeable battery using high-energy X-ray Compton scattering

Kosuke Suzuki; Ayahito Suzuki; Taiki Ishikawa; Masayoshi Itou; Hisao Yamashige; Yuki Orikasa; Yoshiharu Uchimoto; Yoshiharu Sakurai; Hiroshi Sakurai

arXiv · 1707.03727

In-operando quantitation of Li concentration for commercial Li-ion rechargeable battery using high-energy X-ray Compton scattering

Kosuke Suzuki·Ayahito Suzuki·Taiki Ishikawa·Masayoshi Itou·Hisao Yamashige·Yuki Orikasa·Yoshiharu Uchimoto·Yoshiharu Sakurai·Hiroshi Sakurai

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Abstract

Compton scattering is one of the promising probe to quantitate of the Li under in-operando condition, since high-energy X-rays which have high penetration power into the materials are used as incident beam and Compton scattered energy spectrum have specific line-shape by the elements. We develop in-operando quantitation method of Li composition in the electrodes by using line-shape (Sparameter) analysis of Compton scattered energy spectrum. In this study, we apply S-parameter analysis to commercial coin cell Li-ion rechargeable battery and obtain the variation of S-parameters during charge/discharge cycle at positive and negative electrodes. By using calibration curves for Li composition in the electrodes, we determine the change of Li composition of positive and negative electrodes through S-parameters, simultaneously.

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Kosuke Suzuki, Ayahito Suzuki, Taiki Ishikawa, Masayoshi Itou, Hisao Yamashige, Yuki Orikasa, Yoshiharu Uchimoto, Yoshiharu Sakurai, Hiroshi Sakurai. 2017-07-12. In-operando quantitation of Li concentration for commercial Li-ion rechargeable battery using high-energy X-ray Compton scattering. https://arxiv.org/abs/1707.03727

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