Please wait a minute...
Acta Phys. -Chim. Sin.  2007, Vol. 23 Issue (04): 537-542    DOI: 10.1016/S1872-1508(07)60035-7
Article     
Effect of Doping Ti4+ on the Structure and Performances of Li3V2(PO4)3
LIU Su-Qin; LI Shi-Cai; HUANG Ke-Long; CHEN Zhao-Hui
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
Download:   PDF(439KB) Export: BibTeX | EndNote (RIS)      

Abstract  Lithium-ion battery cathode material Li3-2x(V1-xTix)2(PO4)3 was synthesized using sol-gel/carbothermal reduction method. Electrochemical properties of substituted samples were investigated, which showed the enhancement of discharge capacity and the cycle performance by the substitution of Ti4+. The pure material of Li3V2 (PO4)3 presented three plateaus around 3.58, 3.67, and 4.08 V, but the first two plateaus slightly sloping in the substituted samples and the boundary gradually became ambiguous with the increase in the substitution ratio. The differential thermal analysis (DTA) indicated that a stabilized γ -phase product was obtained. The crystal structure was characterized by the X-ray diffraction and the Rietveld method. The results showed that all the lithium sites were partially occupied, which introduced additional vacancies into the lithium sites. The ionic conductivity of doped material was increased to three orders of magnitudes. The disorder of lithium ion would correspond to the enhancement of the conductivity and
specific capacity.


Key wordsLithium-ion battery      Phase change      Rietveld structure refinement      Li3V2(PO4)3      Cathode materials     
Received: 11 September 2006      Published: 04 April 2007
MSC2000:  O646  
Corresponding Authors: HUANG Ke-Long     E-mail: klhuang@mail.csu.edu.cn
Cite this article:

LIU Su-Qin; LI Shi-Cai; HUANG Ke-Long; CHEN Zhao-Hui. Effect of Doping Ti4+ on the Structure and Performances of Li3V2(PO4)3. Acta Phys. -Chim. Sin., 2007, 23(04): 537-542.

URL:

http://www.whxb.pku.edu.cn/10.1016/S1872-1508(07)60035-7     OR     http://www.whxb.pku.edu.cn/Y2007/V23/I04/537

[1] Lei. HE,Jun-Min. XU,Yong-Jian. WANG,Chang-Jin. ZHANG. LiFePO4-Coated Li1.2Mn0.54Ni0.13Co0.13O2 as Cathode Materials with High Coulombic Efficiency and Improved Cyclability for Li-Ion Batteries[J]. Acta Phys. -Chim. Sin., 2017, 33(8): 1605-1613.
[2] Ai-Hua TIAN,Wei WEI,Peng QU,Qiu-Ping XIA,Qi SHEN. One-Step Synthesis of SnS2 Nanoflower/Graphene Nanocomposites with Enhanced Lithium Ion Storage Performance[J]. Acta Phys. -Chim. Sin., 2017, 33(8): 1621-1627.
[3] You-Hao LIAO,Wei-Shan LI. Research Progresses on Gel Polymer Separators for Lithium-Ion Batteries[J]. Acta Phys. -Chim. Sin., 2017, 33(8): 1533-1547.
[4] Guang-Kai JU,Zhan-Liang TAO,Jun CHEN. Controllable Preparation and Electrochemical Performance of Self-assembled Microspheres of α-MnO2 Nanotubes[J]. Acta Phys. -Chim. Sin., 2017, 33(7): 1421-1428.
[5] Yong-Ping GAN,Pei-Pei LIN,Hui HUANG,Yang XIA,Chu LIANG,Jun ZHANG,Yi-Shun WANG,Jian-Feng HAN,Cai-Hong ZHOU,Wen-Kui ZHANG. The Effects of Surfactants on Al2O3-Modified Li-rich Layered Metal Oxide Cathode Materials for Advanced Li-ion Batteries[J]. Acta Phys. -Chim. Sin., 2017, 33(6): 1189-1196.
[6] Ze-Yu GU,Song GAO,Hao HUANG,Xiao-Zhe JIN,Ai-Min WU,Guo-Zhong CAO. Electrochemical Behavior of MWCNT-Constraint SnS2 Nanostructure as the Anode for Lithium-Ion Batteries[J]. Acta Phys. -Chim. Sin., 2017, 33(6): 1197-1204.
[7] Xue-Jun BAI,Min HOU,Chan LIU,Biao WANG,Hui CAO,Dong WANG. 3D SnO2/Graphene Hydrogel Anode Material for Lithium-Ion Battery[J]. Acta Phys. -Chim. Sin., 2017, 33(2): 377-385.
[8] Xiao-Ye NIU,Xiao-Qin DU,Qin-Chao WANG,Xiao-Jing WU,Xin ZHANG,Yong-Ning ZHOU. AlN-Fe Nanocomposite Thin Film:A New Anode Material for Lithium-Ion Batteries[J]. Acta Phys. -Chim. Sin., 2017, 33(12): 2517-2522.
[9] Wen-Hao WU,Xin-Yu HUANG,Rui-Min YAO,Ren-Jie CHEN,Kai LI,Ru-Qiang ZOU. Synthesis and Properties of Polyurethane/Coal-Derived Carbon Foam Phase Change Composites for Thermal Energy Storage[J]. Acta Phys. -Chim. Sin., 2017, 33(1): 255-261.
[10] Sheng-Yi MIAO,Xian-Fu WANG,Cheng-Lin YAN. Self-Roll-Up Technology for Micro-Energy Storage Devices[J]. Acta Phys. -Chim. Sin., 2017, 33(1): 18-27.
[11] Jing-Lun WANG,Xiao-Dan YAN,Tian-Qiao YONG,Ling-Zhi ZHANG. Nitrile-Modified 2, 5-Di-tert-butyl-hydroquinones as Redox Shuttle Overcharge Additives for Lithium-Ion Batteries[J]. Acta Phys. -Chim. Sin., 2016, 32(9): 2293-2300.
[12] Wen LUO,Lei HUANG,Dou-Dou GUAN,Ru-Han HE,Feng LI,Li-Qiang MAI. A Selenium Disulfide-Impregnated Hollow Carbon Sphere Composite as a Cathode Material for Lithium-Ion Batteries[J]. Acta Phys. -Chim. Sin., 2016, 32(8): 1999-2006.
[13] Zu-Guang YANG,Wei-Bo HUA,Jun ZHANG,Jiu-Hua CHEN,Feng-Rong HE,Ben-He ZHONG,Xiao-Dong GUO. Enhanced Electrochemical Performance of LiNi0.5Co0.2Mn0.3O2 Cathode Materials at Elevated Temperature by Zr Doping[J]. Acta Phys. -Chim. Sin., 2016, 32(5): 1056-1061.
[14] Li-Li CAI,Yue-Hua WEN,Jie CHENG,Gao-Ping CAO,Yu-Sheng YANG. Synthesis and Electrochemical Performance of a Benzoquinone-Based Polymer Anode for Aqueous Lithium-Ion Batteries[J]. Acta Phys. -Chim. Sin., 2016, 32(4): 969-974.
[15] Jian-Wen KOU,Zhao WANG,Li-Ying BAO,Yue-Feng SU,Yu HU,Lai CHEN,Shao-Yu XU,Fen CHEN,Ren-Jie CHEN,Feng-Chun SUN,Feng WU. Layered Lithium-Rich Cathode Materials Synthesized by an Ethanol-Based One-Step Oxalate Coprecipitation Method[J]. Acta Phys. -Chim. Sin., 2016, 32(3): 717-722.