Preparation and electrochemical properties of Y-doped Li3V2(PO4)3 cathode materials for lithium batteries

稀土学报(英文版), 2009, 27(1): 134-137. doi: 10.1016/S1002-0721(08)60207-0

^1, , ^2, , ^3, , ^4, , ^5, , ^6, , ^7,

1.Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China;Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of Education Guilin University of Technology Guilin 514004 China

2.Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China

3.Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China;Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of Education Guilin University of Technology Guilin 514004 China

4.Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China;Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of Education Guilin University of Technology Guilin 514004 China

5.Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China

6.Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China;Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of Education Guilin University of Technology Guilin 514004 China

7.Guangxi Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of Education Guilin University of Technology Guilin 514004 China;Department of Resources and Envirorunental Engineering,Guilin University of Technology,Guilin 541004,China

基金项目: Program to Sponsor Teams for Innovation in the Construction of Talent Highlands in Guangxi Institutions of Higher Learning(GuiJiaoRen[2007]71) Research Funds of the Guangxi Key Laboratory of Environmental Engineering ,Protection and Assessment 广西自治区自然科学基金(0832259)

Preparation and electrochemical properties of Y-doped Li3V2(PO4)3 cathode materials for lithium batteries

ZHONG Shengkui ^1, , LIU Letong ^2, , JIANG Jiqiong ^3, , LI Yanwei ^4, , WANG Jian ^5, , LIU Jiequn ^6, , LI Yanhong ^7,

2.Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China

5.Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China

Keywords： lithium ion batteries

Y-doped Li3V2(PO4)3 cathode materials were prepared by a carbothermal reduction(CTR) process. The properties of the Y-doped Li3V2(PO4)3 were investigated by X-ray diffraction (XRD) and electrochemical measurements. XRD studies showed that the Y-doped Li3V2(PO4)3 had the same monoclinic structure as the undoped Li3V2(PO4)3. The Y-doped Li3V2(PO4)3 samples were investigated on the Li extraction/insertion performances through charge/discharge, cyclic voltammogram (CV), and electrochemical impedance spectra (EIS). The optimal doping content of Y was x=0.03 in Li3V2-xYx(PO4)3 system. The Y-doped Li3V2(PO4)3 samples showed a better cyclic ability. The electrode reaction reversibility was enhanced, and the charge transfer resistance was decreased through the Y-doping. The improved electrochemical performances of the Y-doped Li3V2(PO4)3 cathode materials were attributed to the addition of Y3+ ion by stabilizing the monoclinic structure.

参考文献

[1]	Padhi AK.;Goodenough JB.;Nanjundaswamy KS. .PHOSPHO-OLIVINES AS POSITIVE-ELECTRODE MATERIALS FOR RECHARGEABLE LITHIUM BATTERIES[J].Journal of the Electrochemical Society,1997(4):1188-1194.
[2]	Zhou F;Kang KS;Maxisch T;Ceder G;Morgan D .The electronic structure and band gap of LiFePO4 and LiMnPO4[J].Solid State Communications,2004(3/4):181-186.
[3]	Patoux S;Wurm C;Morcrette M;Rousse G Masquelier .A comparative structural and electrochemical study of monoclinic Li3Fe2(PO4)3 and Li3V2(PO4)3[J].Journal of Power Sources,2003,119-121:278.
[4]	Masquelier C;Wurm C;Carvajal J R .A powder neutron diffraction investigation of the two rhombic NASICON analogues:γ-Na3Fe2 (PO4)3 and Li3Fe2 (PO4)3[J].Chemistry of Materials,2000,12:525.
[5]	Barker J;Saidi M Y;Swoyer J .Lithium metal fluorophosphates materials and preparation thereof[P].US Patent,6387568,2002.
[6]	ZHONG Sheng-kui,YIN Zhou-lan,WANG Zhi-xing,CHEN Qi-yuan.Synthesis and characterization of triclinic structural LiVPO4F as possible 4.2 V cathode materials for lithium ion batteries[J].中南工业大学学报(英文版),2007(03):340-343.
[7]	J. Barker;M. Y. Saidi;J. L. Swoyer .Electrochemical Insertion Properties of the Novel Lithium Vanadium Fluorophosphate[J].Journal of the Electrochemical Society,2003(10):A1394-A1398.
[8]	Barker J;Gover R K B;Burns P;Bryan A Saidi M Y Swoyer J L .Structural and electrochemical properties of lithium vanadium Fluorophosphates,LiVPO4[J].Journal of the Electrochemical Society,2005,152(09):A1776.
[9]	Barker J;Saidi MY;Swoyer JL .A comparative investigation of the Li insertion properties of the novel fluorophosphate phases, (NaVPO44F)-F-FandLiVPO[J].Journal of the Electrochemical Society,2004(10):A1670-A1677.
[10]	Barker J;Saidi M Y;Swoyer J.Lithium performance characteristics of lithium vanadium phosphate as a cathode material for Li-ion batteries[J].J Elctrochem Soc Solid State Lett,2003(03):A53.
[11]	Saidi M Y;Barker J;Huang H .Electrochemical properties of lithium vanadium phosphate as cathode material for lithium-ion batteries[J].Electrochemical and Solid-State Letters,2002,5(07):A149.
[12]	Barker J;Saidi M Y .Lithium-containing phosphates,method of preparation,and use thereof[P].USP:005871866A,1999.
[13]	Morgan D;Ceder G;Saidi M Y;Barker J Swoyer J Huang H Adamson G .Experimental and computational study of the structure and electrochemical properties of monoclinic LixM2(PO4)3 compounds[J].Journal of Power Sources,2003,119-121:755.
[14]	Zhong S K;Yin Z L;Wang Z X;Guo H J Li X H .Synthesis and characterization of the novel cathode material Li3V2(PO4)3 by carbon-thermal reduction method[J].Transactions of Nonferrous Metals Society of China,2006,16(zk):S708.
[15]	Saidi M Y;Barker J;Huang H;Swoyer J L Adamson G .Performance characterization of lithium vanadium phosphate as a cathode material for lithium-ion batteries[J].Journal of Power Sources,2003,119-121:266.

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

Preparation and electrochemical properties of Y-doped Li3V2(PO4)3 cathode materials for lithium batteries

参考文献