P2-type layered Na0.67Cr0.33Mg0.17Ti0.5O2 for Na storage applications

Raizo Umezawa; Yuka Tsuchiya; Toru Ishigaki; Hongahally Basappa Rajendra; Naoaki Yabuuchi

doi:10.1039/D1CC00304F

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P2-type layered Na_0.67Cr_0.33Mg_0.17Ti_0.5O₂ for Na storage applications†

Raizo Umezawa,^a Yuka Tsuchiya,^b Toru Ishigaki,^c Hongahally Basappa Rajendra^a and Naoaki Yabuuchi

*^ade

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* Corresponding authors

^a Department of Chemistry and Life Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
E-mail: yabuuchi-naoaki-pw@ynu.ac.jp

^b Department of Applied Chemistry, Tokyo Denki University, Adachi, Tokyo 120-8551, Japan

^c Frontier Research Center for Applied Atomic Sciences, Ibaraki University, 162-1, Shirakata, Tokai, Naka, Ibaraki 319-1106, Japan

^d Advanced Chemical Energy Research Center, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan

^e Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, f1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan

Abstract

Na_0.67Cr_0.33Mg_0.17Ti_0.5O₂ with a P2-type layered structure has been synthesized and examined as a negative electrode material for rechargeable sodium batteries. The layered oxide delivers a reversible capacity of >90 mA h g⁻¹, which corresponds to >95% of the theoretical capacity with excellent cyclability for >450 cycles.

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Article information

DOI: https://doi.org/10.1039/D1CC00304F
Article type: Communication
Submitted: 18 Jan 2021
Accepted: 10 Feb 2021
First published: 11 Feb 2021

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Chem. Commun., 2021,57, 2756-2759

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P2-type layered Na_0.67Cr_0.33Mg_0.17Ti_0.5O₂ for Na storage applications

R. Umezawa, Y. Tsuchiya, T. Ishigaki, H. B. Rajendra and N. Yabuuchi, Chem. Commun., 2021, 57, 2756 DOI: 10.1039/D1CC00304F

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