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

页码：14 / 21

页数：8

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