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 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.

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
3
3
DOI
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

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