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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Mater. | doi: 10.3389/fmats.2019.00001

Encapsulating Mo-Doped TiO2 Anatase in N-doped Amorphous Carbon with Excellent Lithium Storage Performances

Ying Xia1, Rong Chao1, Xiaoyan Yang1,  Fengqi Lu1* and Xiaojun Kuang1
  • 1Guilin University of Technology, China

For improving the capability, cycling stability and rate capacity of anatase TiO2-based electrode, Mo-doped TiO2 anatase encapsulated in nitrogen-doped amorphous carbon (denoted for Mo-TiO2@NC) were synthesized through a facile hydrothermal method and followed by coating with polyaniline (PANI) and heating treatment. When tested as anode for lithium ion batteries, the Mo-TiO2@NC electrode showed initial discharge and charge capacities of 850.7 and 548.3 mAh g-1 at a current density of 85 mA g-1, respectively, with a remarkable discharge capacity maintained at 449.2 mAh g-1 after 100 cycles. Even at high current density of 850 mA g-1, a reversible capacity of 154 mAh g-1 after 200 cycles is obtained, displaying good rate capacity and long-term cycling stability. The outstanding electrochemical performance of Mo-TiO2@NC could be attributed to the synergistic effect of aliovalent ions doping and carbon coating.

Keywords: anatase, titanium dioxide, anode materials, lithium-ion batteries, aliovalent ions doped, Nitrogen doped carbon

Received: 30 Sep 2018; Accepted: 03 Jan 2019.

Edited by:

Kai-Xue Wang, Shanghai Jiao Tong University, China

Reviewed by:

Chunhai Jiang, Xiamen University of Technology, China
Kai Zhu, Harbin Engineering University, China
Shengfu Tong, Sun Yat-sen University, China  

Copyright: © 2019 Xia, Chao, Yang, Lu and Kuang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Fengqi Lu, Guilin University of Technology, Guilin, China, lufengqi@glut.edu.cn