P2-type Na2/3Ni1/3Mn2/3−xTixO2 as a new positive electrode for higher energy Na-ion batteries

Hiroaki Yoshida; Naoaki Yabuuchi; Kei Kubota; Issei Ikeuchi; Arnd Garsuch; Martin Schulz-Dobrick; Shinichi Komaba

doi:10.1039/C3CC49856E

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P2-type Na_2/3Ni_1/3Mn_2/3−xTi_xO₂ as a new positive electrode for higher energy Na-ion batteries†

Hiroaki Yoshida,^a Naoaki Yabuuchi,^a Kei Kubota,^a Issei Ikeuchi,^a Arnd Garsuch,^b Martin Schulz-Dobrick^b and Shinichi Komaba*^a

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* Corresponding authors

^a Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Tokyo 162-8601, Shinjuku, Japan
E-mail: komaba@rs.kagu.tus.ac.jp

^b BASF SE, GCN/EE - M311, 67056 Ludwigshafen, Germany

Abstract

New electrode materials of layered oxides, Na_2/3Ni_1/3Mn_2/3−xTi_xO₂ (0 ≤ x ≤ 2/3), are successfully synthesized, and their electrochemical performance is examined in aprotic Na cells. A Na//Na_2/3Ni_1/3Mn_1/2Ti_1/6O₂ cell delivers 127 mA h g⁻¹ of reversible capacity and the average voltage reaches 3.7 V at first discharge with good capacity retention.

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Article information

DOI: https://doi.org/10.1039/C3CC49856E
Article type: Communication
Submitted: 30 Dec 2013
Accepted: 29 Jan 2014
First published: 10 Feb 2014

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Chem. Commun., 2014,50, 3677-3680

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P2-type Na_2/3Ni_1/3Mn_2/3−xTi_xO₂ as a new positive electrode for higher energy Na-ion batteries

H. Yoshida, N. Yabuuchi, K. Kubota, I. Ikeuchi, A. Garsuch, M. Schulz-Dobrick and S. Komaba, Chem. Commun., 2014, 50, 3677 DOI: 10.1039/C3CC49856E

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