Yolk-Shell TiO2@C Nanocomposite as High-Performance Anode Material for Sodium-Ion Batteries

被引：70
作者：
Qiu, Shen [1 ]
Xiao, Lifen [2 ]
Ai, Xinping [1 ]
Yang, Hanxi [1 ]
Cao, Yuliang [1 ]
机构：
[1] Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China
[2] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 01期
基金：
美国国家科学基金会;
关键词：
(TiO2C)-C-@; yolk-shell nanostructure; self-catalyzed reaction; solvothermal synthesis; Na-ion batteries; SUPERIOR HIGH-RATE; LONG-CYCLE-LIFE; ANATASE TIO2; HIGH-CAPACITY; CATHODE MATERIALS; CARBON; STORAGE; NANOPARTICLES; NANOFIBERS; LITHIUM;
D O I：
10.1021/acsami.6b12001
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Yolk-shell TiO2@C nanocomposites have been, synthesized successfully through a simple self-catalyzing solvothermal method: The structural and morphological characterizations reveal that TiO2@C nanocomposite has a yolk-shell microsphere morphology with diameters of. 1-2 mu m, and both yolk and shell are composed of TiO2 nanoparticles (similar to 10 nm) The as-prepared yolk shell TiO2@C composites exhibit superior sodium storage properties, with a specific capacity of 210 mAh g(-1), an outstanding cycle life of 85% capacity retention of 2000, cycles and extraordinary rate performance at 40 C rate. All the results indicate that the yolk shell TiO2@C nanocomposite can be suggested as a promising anode material for high-performance sodium-ion batteries.
引用
收藏
页码：345 / 353
页数：9
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