Robust LiTi2(PO4)3 microflowers as high-rate and long-life cathodes for Mg-based hybrid-ion batteries

Yanan Xu; Chang Xu; Qinyou An; Qiulong Wei; Jinzhi Sheng; Fangyu Xiong; Cunyuan Pei; Liqiang Mai

doi:10.1039/C7TA03392C

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Robust LiTi₂(PO₄)₃ microflowers as high-rate and long-life cathodes for Mg-based hybrid-ion batteries†

Yanan Xu,‡^a Chang Xu,‡^a Qinyou An,*^a Qiulong Wei,^a Jinzhi Sheng,^a Fangyu Xiong,^a Cunyuan Pei^a and Liqiang Mai

*^ab

Author affiliations

* Corresponding authors

^a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, P. R. China
E-mail: anqinyou86@whut.edu.cn, mlq518@whut.edu.cn

^b Department of Chemistry, University of California, Berkeley, California 94720, USA

Abstract

Novel NASICON-type carbon-coated LiTi₂(PO₄)₃ microflowers (LTP-F/C) as a hybrid magnesium–lithium-ion battery (MLIB) cathode is presented for the first time. Benefiting from the synergistic effect of the NASICON structure, nanosheet-constructed hierarchical architecture, and uniform carbon coating of LTP-F/C, this hybrid MLIB exhibits extraordinary electrochemical performance: ultra-high cycling stability (capacity retention of 80% after 3000 cycles at 10 C) and outstanding rate capability (94 mA h g⁻¹ at 20 C) under a high discharge voltage plateau of ∼1.71 V (vs. Mg/Mg²⁺). This hybrid battery system design is highly promising for large-scale energy storage applications.

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Article information

DOI: https://doi.org/10.1039/C7TA03392C
Article type: Communication
Submitted: 19 Apr 2017
Accepted: 24 May 2017
First published: 24 May 2017

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J. Mater. Chem. A, 2017,5, 13950-13956

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Robust LiTi₂(PO₄)₃ microflowers as high-rate and long-life cathodes for Mg-based hybrid-ion batteries

Y. Xu, C. Xu, Q. An, Q. Wei, J. Sheng, F. Xiong, C. Pei and L. Mai, J. Mater. Chem. A, 2017, 5, 13950 DOI: 10.1039/C7TA03392C

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Journal of Materials Chemistry A