High-voltage honeycomb layered oxide positive electrodes for rechargeable sodium batteries

Chih-Yao Chen; Josef Rizell; Godwill Mbiti Kanyolo; Titus Masese; Yasmine Sassa; Martin Månsson; Keigo Kubota; Kazuhiko Matsumoto; Rika Hagiwara; Qiang Xu

doi:10.1039/D0CC03021J

High-voltage honeycomb layered oxide positive electrodes for rechargeable sodium batteries†

Chih-Yao Chen,

^a Josef Rizell,

^b Godwill Mbiti Kanyolo,

^c Titus Masese,

*^ad Yasmine Sassa,

^b Martin Månsson,

^e Keigo Kubota,

^ad Kazuhiko Matsumoto,

*^af Rika Hagiwara

^af and Qiang Xu

*^ad

Author affiliations

* Corresponding authors

^a AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Sakyo-ku, Kyoto 606-8501, Japan
E-mail: titus.masese@aist.go.jp, q.xu@aist.go.jp

^b Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden

^c Department of Engineering Science, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan

^d Department of Energy and Environment, Research Institute of Electrochemical Energy (RIECEN), National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan

^e Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, Roslagstullsbacken 21, SE-106 91 Stockholm, Sweden

^f Graduate School of Energy Science, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
E-mail: k-matsumoto@energy.kyoto-u.ac.jp

Abstract

Honeycomb layered oxides from Na₂Ni_2−xCo_xTeO₆ family were assessed for use as positive electrodes in rechargeable sodium batteries at ambient and elevated temperatures using ionic liquids. Substitution of nickel with cobalt increases the discharge voltage to nearly 4 V (versus Na⁺/Na), surpassing the average voltages of most Na based layered oxide positive electrodes.

Chemical Communications

High-voltage honeycomb layered oxide positive electrodes for rechargeable sodium batteries†

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