Na[Ni0.4Fe0.2Mn0.4−xTix]O2: a cathode of high capacity and superior cyclability for Na-ion batteries

Xin Sun; Yi Jin; Chen-Yu Zhang; Jian-Wu Wen; Yu Shao; Yong Zang; Chun-Hua Chen

doi:10.1039/C4TA03828B

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Na[Ni_0.4Fe_0.2Mn_0.4−xTi_x]O₂: a cathode of high capacity and superior cyclability for Na-ion batteries†

Xin Sun,^a Yi Jin,^b Chen-Yu Zhang,^a Jian-Wu Wen,^a Yu Shao,^a Yong Zang^a and Chun-Hua Chen*^a

Author affiliations

* Corresponding authors

^a CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei 230026, Anhui, China
E-mail: cchchen@ustc.edu.cn
Fax: +86 (0)551 63601592
Tel: +86 (0)551 63606971

^b China Electric Power Research Institute, Department of Electric Engineering and New Materials, Beijing 100192, China

Abstract

New electrode materials of layered oxides, Na[Ni_0.4Fe_0.2Mn_0.4−xTi_x]O₂, have been synthesized as positive electrodes for sodium-ion batteries. The partial substitution of Mn with Ti increases the lattice spacing without changing the lattice structure. A Na//Na[Ni_0.4Fe_0.2Mn_0.2Ti_0.2]O₂ cell delivers a reversible capacity of 145 mA h g⁻¹ with excellent long cycling performance.

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Article information

DOI: https://doi.org/10.1039/C4TA03828B
Article type: Communication
Submitted: 24 Jul 2014
Accepted: 26 Aug 2014
First published: 26 Aug 2014

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J. Mater. Chem. A, 2014,2, 17268-17271

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Na[Ni_0.4Fe_0.2Mn_0.4−xTi_x]O₂: a cathode of high capacity and superior cyclability for Na-ion batteries

X. Sun, Y. Jin, C. Zhang, J. Wen, Y. Shao, Y. Zang and C. Chen, J. Mater. Chem. A, 2014, 2, 17268 DOI: 10.1039/C4TA03828B

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Journal of Materials Chemistry A