Study of LiCoO2 nanoparticles by hard x-ray emission and absorption spectroscopies

L. Simonelli, N. L. Saini, M. Moretti Sala, M. Okubo, I. Honma, T. Mizokawa, G. Monaco

研究成果: Article査読

6 被引用数 (Scopus)

抄録

A combination of high resolution x-ray absorption and x-ray emission spectroscopy is used to investigate electronic properties of LiCoO2 nanoparticles with various sizes down to 8 nm. We find that the nanostructuring has direct influence on the electronic structure of the title system, similar to the effect of delithiation. In particular, an abrupt reduction (increase) of the intersite (intrasite) 4p-3d hybridization is observed for nanoparticles with size smaller than 15 nm. Since the electrochemical properties are known to degrade in nanoparticles below the critical size of 15 nm, the results indicate a direct relationship between the intersite-intrasite correlations and the cathode efficiency, limiting the use of LiCoO2 nanoparticles.

本文言語English
論文番号083111
ジャーナルApplied Physics Letters
103
8
DOI
出版ステータスPublished - 2013 8 19
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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