In situ observation of LiNiO2 single-particle fracture during Li-Ion extraction and insertion

Kaoru Dokko; Matsuhiko Nishizawa; Soichi Horikoshi; Takashi Itoh; Mohamed Mohamedi; Isamu Uchida

doi:10.1149/1.1390977

In situ observation of LiNiO₂ single-particle fracture during Li-Ion extraction and insertion

Kaoru Dokko, Matsuhiko Nishizawa, Soichi Horikoshi, Takashi Itoh, Mohamed Mohamedi, Isamu Uchida

研究成果: Article › 査読

88 被引用数 (Scopus)

抄録

Electrochemical lithium-ion extraction/insertion properties of Li_1-xNiO₂ single particles were investigated by attaching a filament microelectrode to the particle in 1 mol/dm³ LiClO₄/ethylene carbonate + propylene carbonate electrolyte. High-resolution cyclic voltammograms and galvanostatic chronopotentiograms were recorded. In addition, we observed in situ particle fracture during charge-discharge using an optical microscope equipped with a charge-coupled device camera. We found that the particle fractures when it is polarized above 4.2 V vs. Li/Li⁺. This phenomenon was explained by the change in crystal parameters expected to occur for x > 0.75 in Li_1-xNiO₂.

本文言語	English
ページ（範囲）	125-127
ページ数	3
ジャーナル	Electrochemical and Solid-State Letters
巻	3
号	3
DOI	https://doi.org/10.1149/1.1390977
出版ステータス	Published - 2000 3月 1

ASJC Scopus subject areas

化学工学（全般）
材料科学（全般）
物理化学および理論化学
電気化学
電子工学および電気工学

文献へのアクセス

10.1149/1.1390977

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引用スタイル

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abstract = "Electrochemical lithium-ion extraction/insertion properties of Li1-xNiO2 single particles were investigated by attaching a filament microelectrode to the particle in 1 mol/dm3 LiClO4/ethylene carbonate + propylene carbonate electrolyte. High-resolution cyclic voltammograms and galvanostatic chronopotentiograms were recorded. In addition, we observed in situ particle fracture during charge-discharge using an optical microscope equipped with a charge-coupled device camera. We found that the particle fractures when it is polarized above 4.2 V vs. Li/Li+. This phenomenon was explained by the change in crystal parameters expected to occur for x > 0.75 in Li1-xNiO2.",

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AU - Dokko, Kaoru

AU - Nishizawa, Matsuhiko

AU - Horikoshi, Soichi

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AU - Mohamedi, Mohamed

AU - Uchida, Isamu

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AB - Electrochemical lithium-ion extraction/insertion properties of Li1-xNiO2 single particles were investigated by attaching a filament microelectrode to the particle in 1 mol/dm3 LiClO4/ethylene carbonate + propylene carbonate electrolyte. High-resolution cyclic voltammograms and galvanostatic chronopotentiograms were recorded. In addition, we observed in situ particle fracture during charge-discharge using an optical microscope equipped with a charge-coupled device camera. We found that the particle fractures when it is polarized above 4.2 V vs. Li/Li+. This phenomenon was explained by the change in crystal parameters expected to occur for x > 0.75 in Li1-xNiO2.

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