Ti-doped SnOx encapsulated in Carbon nanofibers with enhanced lithium storage properties

被引：17
作者：
Liu, Yuan [1 ]
Yan, Xiaodong [1 ]
Lan, Jin-Le [1 ]
Teng, Donghua [1 ]
Yu, Yunhua [1 ,2 ]
Yang, Xiaoping [1 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
[2] Changzhou Inst Adv Mat, Changzhou 213000, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2014年 / 137卷
基金：
中国国家自然科学基金;
关键词：
Ti-doped SnOx nanoparticles; Encapsulation; Carbon nanofibers; Electrospinning; Lithium-storage properties; ANODE MATERIAL; COATED SNO2; ELECTROCHEMICAL PERFORMANCE; RATE CAPABILITY; ELECTRODE; NANOPARTICLES; FILM; NANOCRYSTALS; GENERATION; CONVERSION;
D O I：
10.1016/j.electacta.2014.05.052
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Hybrid nanocomposites composed of carbon nanofibers and Ti-doped SnOx nanoparticles with varied molar ratios of Ti/Sn (=0.05, 0.1 and 0.2) have been prepared through electrospinning technique and subsequent thermal treatments. High-resolution transmission electron microscopy showed that the Ti-doped SnOx nanoparticles with a very small particle size of 2 similar to 4nm were uniformly encapsulated in the carbon nanofibers (CNFs). Among the as-prepared samples, the electrode with the Ti/Sn molar ratio of 0.1 delivered the best reversible capacity of 670.7 mAh g(-1) at the 60th cycle, which was 17.9% higher than that of the pristine SnOx/CNFs (SOC). What is more, the optimal electrode presented good rate performance (302.1 mAh g(-1) at 2 A g(-1)). The enhanced lithium storage properties of Ti-doped SnOx/CNFs (TSOC) can be attributed to the uniform encapsulation of ultrafine SnOx nanoparticles in the conductive CNFs as well as the doping with Ti4+. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：9 / 16
页数：8
相关论文
共 40 条
[1]   Mechanical stability for nanostructured Sn- and Si-based anodes [J].
Aifantis, K. E. ;
Hackney, S. A. .
JOURNAL OF POWER SOURCES, 2011, 196 (04) :2122-2127
[2]   Constructing Hierarchical Spheres from Large Ultrathin Anatase TiO2 Nanosheets with Nearly 100% Exposed (001) Facets for Fast Reversible Lithium Storage [J].
Chen, Jun Song ;
Tan, Yi Ling ;
Li, Chang Ming ;
Cheah, Yan Ling ;
Luan, Deyan ;
Madhavi, Srinivasan ;
Boey, Freddy Yin Chiang ;
Archer, Lynden A. ;
Lou, Xiong Wen .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (17) :6124-6130
[3]   In Situ Generation of Few-Layer Graphene Coatings on SnO2-SiC Core-Shell Nanoparticles for High-Performance Lithium-Ion Storage [J].
Chen, Zhongxue ;
Zhou, Min ;
Cao, Yuliang ;
Ai, Xinping ;
Yang, Hanxi ;
Liu, Jun .
ADVANCED ENERGY MATERIALS, 2012, 2 (01) :95-102
[4]   A simple synthesis of nanostructured Cu-incorporated SnO2 phases with improved cycle performance for lithium ion batteries [J].
El-Shinawi, Hany ;
Boehm, Matthias ;
Leichtweiss, Thomas ;
Peppier, Klaus ;
Janek, Juergen .
ELECTROCHEMISTRY COMMUNICATIONS, 2013, 36 :33-37
[5]   Challenges in the development of advanced Li-ion batteries: a review [J].
Etacheri, Vinodkumar ;
Marom, Rotem ;
Elazari, Ran ;
Salitra, Gregory ;
Aurbach, Doron .
ENERGY & ENVIRONMENTAL SCIENCE, 2011, 4 (09) :3243-3262
[6]   The use of tin-decorated mesoporous carbon as an anode material for rechargeable lithium batteries [J].
Grigoriants, I ;
Sominski, L ;
Li, HL ;
Ifargan, I ;
Aurbach, D ;
Gedanken, A .
CHEMICAL COMMUNICATIONS, 2005, (07) :921-923
[7]   In situ synthesis of SnO2-Fe2O3@polyaniline and their conversion to SnO2-Fe2O3@C composite as fully reversible anode material for lithium-ion batteries [J].
Guo, Jinxue ;
Chen, Lei ;
Wang, Guangjin ;
Zhang, Xiao ;
Li, Fenfen .
JOURNAL OF POWER SOURCES, 2014, 246 :862-867
[8]   Lithium storage in carbon-coated SnO2 by conversion reaction [J].
Guo, X. W. ;
Fang, X. P. ;
Sun, Y. ;
Shen, L. Y. ;
Wang, Z. X. ;
Chen, L. Q. .
JOURNAL OF POWER SOURCES, 2013, 226 :75-81
[9]  
Jiang L.-Y., 2009, J PHYS CHEM C, V113, P32
[10]   Critical size of a nano SnO2 electrode for Li-secondary battery [J].
Kim, C ;
Noh, M ;
Choi, M ;
Cho, J ;
Park, B .
CHEMISTRY OF MATERIALS, 2005, 17 (12) :3297-3301
1234