In Situ Observation of LiNiO[sub 2] Single-Particle Fracture during Li-Ion Extraction and Insertion

1 January 1999

journal article
Published by The Electrochemical Society in Electrochemical and Solid-State Letters

Vol. 3 (3) , 125-127
https://doi.org/10.1149/1.1390977

Abstract

Electrochemical lithium‐ion extraction/insertion properties of single particles were investigated by attaching a filament microelectrode to the particle in 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 vs. . This phenomenon was explained by the change in crystal parameters expected to occur for in . ©2000 The Electrochemical Society

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