Porous 0.2Li2MnO3·0.8LiNi0.5Mn0.5O2 nanorods as cathode materials for lithium-ion batteries

Jingang Yang; Fangyi Cheng; Xiaolong Zhang; Haiyan Gao; Zhanliang Tao; Jun Chen

doi:10.1039/C3TA14228K

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Porous 0.2Li₂MnO₃·0.8LiNi_0.5Mn_0.5O₂ nanorods as cathode materials for lithium-ion batteries†

Jingang Yang,^a Fangyi Cheng,*^a Xiaolong Zhang,^a Haiyan Gao,^a Zhanliang Tao^a and Jun Chen*^a

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* Corresponding authors

^a Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, P.R. China
E-mail: fycheng@nankai.edu.cn, chenabc@nankai.edu.cn
Fax: +86-22-23509571
Tel: +86-22-23504482

Abstract

Porous 0.2Li₂MnO₃·0.8LiNi_0.5Mn_0.5O₂ nanorods (LLNMO PNRs) assembled with nanoparticles have been prepared and investigated as cathode materials for rechargeable lithium-ion batteries. The LLNMO PNRs were obtained through solid-state Li and Ni implantation of porous Mn₂O₃ nanowires. Without surface modification, the as synthesized LLNMO PNRs exhibited superior capacity and rate capability to the counterpart bulk samples. An initial discharge capacity of 275 mA h g⁻¹ could be delivered at 0.2 C rates, with about 90% capacity retention after 100 cycles. The remarkable performance was attributed to the porous 1D nanostructures that could buffer against the local volume change and shorten the Li-ion diffusion distance.

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Article information

DOI: https://doi.org/10.1039/C3TA14228K
Article type: Communication
Submitted: 20 Oct 2013
Accepted: 22 Nov 2013
First published: 11 Dec 2013

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J. Mater. Chem. A, 2014,2, 1636-1640

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Porous 0.2Li₂MnO₃·0.8LiNi_0.5Mn_0.5O₂ nanorods as cathode materials for lithium-ion batteries

J. Yang, F. Cheng, X. Zhang, H. Gao, Z. Tao and J. Chen, J. Mater. Chem. A, 2014, 2, 1636 DOI: 10.1039/C3TA14228K

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Journal of Materials Chemistry A