Self-assembled twine-like Na2Ti3O7 nanostructure as advanced anode for sodium-ion batteries

被引:37
作者
Yan, Xiao [1 ]
Sun, Deye [1 ]
Jiang, Jicheng [1 ]
Yan, Wenchao [1 ]
Jin, Yongcheng [1 ]
机构
[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China
关键词
Nanotube; One-dimensional structure; Anode material; Sodium ion battery; Electrochemistry; LITHIUM-ION; CATHODE MATERIAL; ELECTROCHEMICAL PERFORMANCE; ANATASE TIO2; NANOTUBES; NA; TITANATE; STORAGE; ELECTRODES; COMPOSITE;
D O I
10.1016/j.jallcom.2016.12.152
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Sodium-ion batteries (SIBs) have attracted growing interest due to their cost-effectiveness compared with lithium-ion batteries counterparts. Exploring anode materials with outstanding performance is a persistent objective with the development of SIBs. Herein, we report a compound of Na2Ti3O7 with twine-like three-dimension (3D) network framework synthesized via a facile stirring hydrothermal method. The resulting material has a unique structure with elongated one-dimensional nanotubes, ultrathin tube wall, large surface area, numerous -OH group as well as twine-like winding body. The cell assembled with Na2Ti3O7 as anode active material manifests excellent cycling performance (77% capacity is retented after 1000 cycles at 10 C) and superior rate capability (80 mA h g(-1) is kept even at ultra-high current rate of 50 C). The special structure endows the material with superior electrochemical properties and great potential application in SIBs. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:208 / 214
页数:7
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