表面科学
Online ISSN : 1881-4743
Print ISSN : 0388-5321
特集:インピーダンス分光法を用いた有機エレクトロニクス解析の新展開
ACインピーダンス法によるリチウムイオン電池電極反応の素過程解析
中山 将伸
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ジャーナル フリー

2012 年 33 巻 2 号 p. 87-92

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AC impedance spectroscopy is a powerful and convenient technique to investigate the elemental reaction at electrode | electrolyte interface in rechargeable lithium ion battery. This paper describes fitting procedure of impedance plots and assignment of each separated resistance to elemental reaction. In particular, the elemental reaction occurred at A-site deficient perovskite, La1/3NbO3, electrode is focused in this paper, since no significant side-reaction was observed due to mild voltage range from 2 to 1 V vs. Li+/Li. The results indicated two elemental reactions at the interface of electrode | electrolyte corresponding to higher and lower frequency region in AC impedance spectra, and attempts has been made to be described in terms of an ‘adatom model’.

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