Porous spheres of TiO2 (B)/anatase entwined by graphene nanoribbons for high Li+ thorn rate performance

被引：12
|
作者：
Li, Xinlu [1 ]
Liu, Yin [1 ]
Zhang, Xinlin [1 ]
Yao, Cong [1 ]
Wang, Ronghua [1 ]
Xu, Chaohe [2 ]
Lei, Juan [3 ]
机构：
[1] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400030, Peoples R China
[2] Chongqing Univ, Coll Aerosp Engn, Chongqing 400030, Peoples R China
[3] State Grid Chongqing Elect Power Co, Elect Power Res Inst, Chongqing 401123, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2019年 / 298卷
基金：
中国国家自然科学基金;
关键词：
Titanium dioxide; Graphene nanoribbons; Anode materials; Lithium-ion batteries; ELECTROCHEMICAL ENERGY-STORAGE; MULTIWALLED CARBON NANOTUBES; LITHIUM-ION BATTERIES; PHOTOCATALYTIC ACTIVITY; ANODE MATERIALS; ANATASE; NANOSHEETS; INSERTION; OXIDE; COMPOSITES;
D O I：
10.1016/j.electacta.2018.12.027
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
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.
引用
收藏
页码：14 / 21
页数：8
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