Li3V2(PO4)3@C core-shell nanocomposite as a superior cathode material for lithium-ion batteries

被引：134

作者：

Duan, Wenchao ^{[1
]}

Hu, Zhe ^{[1
]}

Zhang, Kai ^{[1
]}

Cheng, Fangyi ^{[1
,2
]}

Tao, Zhanliang ^{[1
]}

Chen, Jun ^{[1
,2
]}

机构：

[1] Nankai Univ, Coll Chem, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China

[2] Nankai Univ, Synerget Innovat Ctr Chem Sci & Engn, Tianjin 300071, Peoples R China

来源：

NANOSCALE | 2013年 / 5卷 / 14期

关键词：

HIGH-RATE CAPABILITY; ELECTROCHEMICAL PERFORMANCE; HIGH-CAPACITY; LIFEPO4; COMPOSITES;

D O I：

10.1039/c3nr01617j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Li3V2(PO4)(3)@C core-shell nanoparticles with typical sizes of 20-40 nm were synthesized using a hydrothermal-assisted sol-gel method. Ascorbic acid and PEG-400 were adopted as carbon sources and reductants. The uniform Li3V2(PO4)(3)@C nanocomposite obtained was composed of a Li3V2(PO4)(3) core with high-phase purity and a graphitized carbon shell, which was characterized using XRD, SEM, TEM, and Raman analysis. The nanocomposite exhibited a remarkably high rate capability and long cyclability, delivering a discharge capacity of 138 mA h g(-1) at 5 C within a voltage range of 3-4.8 V and the capacity retention was 86% after 1000 cycles. The superior electrochemical performance of Li3V2(PO4)(3)@C indicates that it has potential for application as a cathode material in advanced rechargeable lithium-ion batteries.

引用

页码：6485 / 6490

页数：6

共 35 条

[1] Building better batteries [J].

Armand, M. ;

Tarascon, J. -M. .

NATURE, 2008, 451 (7179) :652-657

[2] The effect of Al substitution on the electrochemical insertion properties of the lithium vanadium phosphate, Li3V2(PO4)3 [J].

Barker, J. ;

Gover, R. K. B. ;

Burns, P. ;

Bryan, A. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (04) :A307-A313

[3] Combination of Lightweight Elements and Nanostructured Materials for Batteries [J].

Chen, Jun ;

Cheng, Fangyi .

ACCOUNTS OF CHEMICAL RESEARCH, 2009, 42 (06) :713-723

[4] Electrochemical performance of the carbon coated Li3V2(PO4)3 cathode material synthesized by a sol-gel method [J].

Chen, Quanqi ;

Wang, Jianming ;

Tang, Zheng ;

He, Weichun ;

Shao, Haibo ;

Zhang, Jianqing .

ELECTROCHIMICA ACTA, 2007, 52 (16) :5251-5257

[5] Enhancing Electrocatalytic Oxygen Reduction on MnO2 with Vacancies [J].

Cheng, Fangyi ;

Zhang, Tianran ;

Zhang, Yi ;

Du, Jing ;

Han, Xiaopeng ;

Chen, Jun .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2013, 52 (09) :2474-2477

[6] Porous LiMn2O4 nanorods with durable high-rate capability for rechargeable Li-ion batteries [J].

Cheng, Fangyi ;

Wang, Hongbo ;

Zhu, Zhiqiang ;

Wang, Yan ;

Zhang, Tianran ;

Tao, Zhanliang ;

Chen, Jun .

ENERGY & ENVIRONMENTAL SCIENCE, 2011, 4 (09) :3668-3675

[7] Functional Materials for Rechargeable Batteries [J].

Cheng, Fangyi ;

Liang, Jing ;

Tao, Zhanliang ;

Chen, Jun .

ADVANCED MATERIALS, 2011, 23 (15) :1695-1715

[8] Carbon supported, Al doped-Li3V2(PO4)3 as a high rate cathode material for lithium-ion batteries [J].

Cho, A. R. ;

Son, J. N. ;

Aravindan, V. ;

Kim, H. ;

Kang, K. S. ;

Yoon, W. S. ;

Kim, W. S. ;

Lee, Y. S. .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (14) :6556-6560

[9] Effects of Ti and Mg Codoping on the Electrochemical Performance of Li3V2(PO4)3 Cathode Material for Lithium Ion Batteries [J].

Deng, C. ;

Zhang, S. ;

Yang, S. Y. ;

Gao, Y. ;

Wu, B. ;

Ma, L. ;

Fu, B. L. ;

Wu, Q. ;

Liu, F. L. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (30) :15048-15056

[10] Effect of surface carbon structure on the electrochemical performance of LiFePO4 [J].

Doeff, MM ;

Hu, YQ ;

McLarnon, F ;

Kostecki, R .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2003, 6 (10) :A207-A209

← 1 2 3 4 →