Preparation and electrode property of layered rock-salt type LiNi(1 x)/2Co(1 x)/2TixO2 and LiNi(1 x)/2Co(1 x)/20.05Fe0.05TixO2 (0 ≥ x ≥ 0.1)

Kenjiro Fujimoto, Kohei Nanbu, Yuki Yamaguchi, Akihisa Aimi

研究成果: Article査読

抄録

Layered rock-salt LiNi(1 x)/2Co(1 x)/2TixO2 (0 ≥ x ≥ 0.1) and LiNi(1 x)/2Co(1 x)/20.05Fe0.05TixO2 (0 ≥ x ≥ 0.1) were prepared by the electrostatic spray deposition method, which is one of the solution processes, to investigate the correlation between these crystal structures and electrode properties of the multinary oxides with solid solution of Fe and Ti ions. Even with only 5% solid solution of Fe, the cycle retention rate after 50 cycles decreased by 58%. Regardless of Fe-substitution/non-substitution, the crystallite size of the powder calcined at 973K under oxygen atmosphere became finer as the amount of Ti substitution increased. Although Ti ions do not contribute to redox, Ti-substituted materials are improved Li diffusion due to finer crystallite size, and show better discharge capacity and cycle performance as Ti content increased. Not only in the LiNiCo system, but also in the LiNiCoFe system, crystallite size refinement and improvement in initial discharge capacity and cycle performance were observed depending on the amount of Ti substitution, indicating that Ti ions contribute to lattice stabilization.

本文言語English
ページ(範囲)131-137
ページ数7
ジャーナルJournal of the Ceramic Society of Japan
130
1
DOI
出版ステータスPublished - 1 1月 2022

フィンガープリント

「Preparation and electrode property of layered rock-salt type LiNi(1 x)/2Co(1 x)/2TixO2 and LiNi(1 x)/2Co(1 x)/20.05Fe0.05TixO2 (0 ≥ x ≥ 0.1)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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