Multifunctional TiO2-C/MnO2 Core-Double-Shell Nanowire Arrays as High-Performance 3D Electrodes for Lithium Ion Batteries

被引:338
作者
Liao, Jin-Yun [1 ]
Higgins, Drew [1 ]
Lui, Gregory [1 ]
Chabot, Victor [1 ]
Xiao, Xingcheng [2 ]
Chen, Zhongwei [1 ]
机构
[1] Univ Waterloo, Waterloo Inst Nanotechnol, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
[2] Gen Motors Global Res & Dev Ctr, Warren, MI 48090 USA
基金
加拿大自然科学与工程研究理事会;
关键词
Li-ion batteries; core-shell; TiO2; MnO2; nanowire; 3D; HIGH-POWER; CATHODE MATERIALS; HIGH-CAPACITY; ANODE; NANOTUBE; NANOSTRUCTURES; GRAPHENE/MNO2; NANOMATERIALS; BETA-MNO2; FOIL;
D O I
10.1021/nl4030159
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The unique TiO2-C/MnO2 core-double-shell nanowires are synthesized for the first time using as anode materials for lithium ion batteries (LIBs). They combine both advantages from TiO2 such as excellent cycle stability and MnO2 with high capacity (1230 mA h g(-1)). The additional C interlayer intends to improve the electrical conductivity. The self-supported nanowire arrays grown directly on current-collecting substrates greatly simplify the fabrication processing of electrodes without applying binder and conductive additives. Each nanowire is anchored to the current collector, leading to fast charge transfer. The unique one-dimensional core-double-shell nanowires exhibit enhanced electrochemical performance with a higher discharge/charge capacity, superior rate capability, and longer cycling lifetime.
引用
收藏
页码:5467 / 5473
页数:7
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