期刊
ELECTROCHIMICA ACTA
卷 298, 期 -, 页码 14-21出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.12.027
关键词
Titanium dioxide; Graphene nanoribbons; Anode materials; Lithium-ion batteries
资金
- Fundamental Research Funds for the Central Universities [106112017CDJXSYY0001]
- National Natural Science Foundation of China [51772034]
- Chongqing Research Program of Basic Research and Frontier Technology [CSTC 2018jcy-jAX0026]
A porous spherical hybrid of TiO2 (B)/anatase entwined by graphene nanoribbons (GNRs) was synthesized by a facile and scalable method. The entwining of GNRs can adhere on the surface of TiO2 by electrostatic interactions and prevent TiO2 nanoribbons from self-scrolling to nanotubes, facilitating large lithium storage and high rate capability. The TiO2/GNRs nanocomposite exhibited high rate capability in galvanostatic charge-discharge experiments, providing a capacity of 131 mAh g(-1) with a coulombic efficiency of 99.2% at a charge rate of 10C (1 C = 335mA g(-1)) over 1400 cycles. The appealing electrochemical performance can be attributed to the synergistic effect of TiO2 nanoribbons entwined by GNRs. (C) 2018 Elsevier Ltd. All rights reserved.
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