The Effect of Carbon Coating on the Electrochemical Performance of Nanosized Li2FeSiO4 Cathode Materials

被引：5
作者：
Wang, Y. [1 ]
Su, D. [1 ]
Wang, G. [1 ]
机构：
[1] Univ Technol Sydney, Sch Chem & Forens Sci, Res Ctr Clean Energy Technol, Sydney, NSW 2007, Australia
来源：
ACTA PHYSICA POLONICA A | 2013年 / 123卷 / 02期
关键词：
LITHIUM-ION BATTERIES; LIFEPO4; CATHODE; MN;
D O I：
10.12693/APhysPolA.123.279
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Carbon-coated Li2FeSiO4/C cathode materials have been synthesized through a modified ball-milling process. The physical characterizations of Li2FeSiO4 were conducted by using X-ray powder diffraction, field-emission scanning electron microscopy and transmission electron microscopy techniques. Field-emission scanning electron microscopy and transmission electron microscopy images revealed that Li2FeSiO4/C consists of nanosized particles coated with an amorphous carbon layer. The electrochemical performances of Li2FeSiO4/C cathode materials were evaluated through fully assembled lithium batteries via cyclic voltammetry, charge/discharge test and electrochemical impedance spectroscopy. The Li2FeSiO4/C cathode materials showed a much improved electrochemical performance in terms of higher specific capacity, better cycling performance and less charge transfer resistance than that of the pristine Li2FeSiO4. DOI: 10.12693/APhysPolA.123.279
引用
收藏
页码：279 / 282
页数：4
相关论文
共 18 条
[1]   Building better batteries [J].
Armand, M. ;
Tarascon, J. -M. .
NATURE, 2008, 451 (7179) :652-657
[2]   Is it possible to prepare olivine-type LiFeSiO4?: A joint computational and experimental investigation [J].
de Dompablo, M. E. Arroyo Y. ;
Gallardo-Amores, J. M. ;
Garcia-Martinez, J. ;
Moran, E. ;
Tarascon, J. -M. ;
Armand, M. .
SOLID STATE IONICS, 2008, 179 (27-32) :1758-1762
[3]   Li2MSiO4 (M = Fe and/or Mn) cathode materials [J].
Dominko, R. .
JOURNAL OF POWER SOURCES, 2008, 184 (02) :462-468
[4]   Structure and electrochemical performance of Li2MnSiO4 and Li2FeSiO4 as potential Li-battery cathode materials [J].
Dominko, R ;
Bele, M ;
Gaberscek, M ;
Meden, A ;
Remskar, M ;
Jamnik, J .
ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (02) :217-222
[5]   Nanostructured Li2FeSiO4 electrode material synthesized through hydrothermal-assisted sol-gel process [J].
Gong, Z. L. ;
Li, Y. X. ;
He, G. N. ;
Li, J. ;
Yang, Y. .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2008, 11 (05) :A60-A63
[6]   Synthesis and characterization of Li2MnxFe1-xSiO4 as a cathode material for lithium-ion batteries [J].
Gong, Z. L. ;
Li, Y. X. ;
Yang, Y. .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2006, 9 (12) :A542-A544
[7]   Silicate cathodes for lithium batteries: alternatives to phosphates? [J].
Islam, M. Saiful ;
Dominko, Robert ;
Masquelier, Christian ;
Sirisopanaporn, Chutchamon ;
Armstrong, A. Robert ;
Bruce, Peter G. .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (27) :9811-9818
[8]   Electrochemical and Thermal Studies of Carbon-Coated LiFePO4 Cathode [J].
Joachin, Humberto ;
Kaun, Thomas D. ;
Zaghib, Karim ;
Prakash, Jai .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (06) :A401-A406
[9]   Effects of roasting temperature and modification on properties of Li2FeSiO4/C cathode [J].
Li, Li-ming ;
Guo, Hua-jun ;
Li, Xin-hai ;
Wang, Zhi-xing ;
Peng, Wen-jie ;
Xiang, Kai-xiong ;
Cao, Xuan .
JOURNAL OF POWER SOURCES, 2009, 189 (01) :45-50
[10]   Microwave-Solvothermal Synthesis of Nanostructured Li2MSiO4/C (M = Mn and Fe) Cathodes for Lithium-Ion Batteries [J].
Muraliganth, T. ;
Stroukoff, K. R. ;
Manthiram, A. .
CHEMISTRY OF MATERIALS, 2010, 22 (20) :5754-5761
12