Synthesis and characterization of Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 by wet chemical route

稀有金属（英文版）, 2009, 28(2): 122-126. doi: 10.1007/s12598-009-0024-4

^1, , ^2, , ^3, , ^4,

1.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

2.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

3.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

4.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

基金项目: the Scientific Research Fund of Hunan Provincial Education Department, China(07B060) 国家自然科学基金(20873054)

Synthesis and characterization of Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 by wet chemical route

WU Xianming ^1, , LI Runxiu ^2, , CHEN Shang ^3, , HE Zeqiang ^4,

1.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

2.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

3.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

4.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

Keywords： lithium ion battery

Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 was prepared by wet chemical route. The phase, surface morphology, and electrochemical properties of the prepared powders were characterized by X-ray diffraction, scanning electron micrograph, and galvanostatic charge-discharge experiments. Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 has similar X-ray diffraction patterns as LiMn2O4. The corner and border of Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 particles are not as clear as the uncoated one. The two powders show similar values of lithium-ion diffusion coefficient. When cy-cled at room temperature and 55℃ for 40 times at the charge-discharge rate of 0.2C, Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 shows the capacity retentions of 98.2% and 93.9%, respectively, which are considerably higher than the values of 85.4% and 79.1% for the uncoated one. Both the capacity retention differences between Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 and LiMn204 cycling at room temperature and 55℃ become larger with the increase of charge-discharge rate. When the charge-discharge rate reaches 2C, the capacity retention of LATP-coated LiMn2O4 becomes 8.4% higher than the uncoated LiMn2O4 for room temperature cycling, and it becomes 11.1% higher than the latter when cycled at 55℃.

参考文献

[1]	Jiang C H;Dou S X;Liu H K;Ichihara M and Zhou H.S .Synthesis of spinel LiMn2O4 nanoparticles through one-step hydrothermal reaction[J].Journal of Power Sources,2007,172:410.
[2]	Cabana J;Valdes S;Palacin T;Oro-Sole M.R Fuertes J Marban A and Fuertes G .Enhanced high rate performance of LiMn2O404 spinel nanoparticles synthesized by a hard-template route[J].Journal of Power Sources,2007,166:492.
[3]	Zhao M S;Song X P .Synthesizing kinetics and characteristics for spinel LiMn2O4 with the precursor using as lithium-ion battery cathode material[J].Journal of Power Sources,2007,164:822.
[4]	Amatucci G G;Schmutz C N;Blyr A;Sigala C Gozdz A.S Larcher D and Tarascon J.M .Materials' effects on the elevated and room temperature performance of C/LiMn2O4 Li-ion batteries[J].Journal of Power Sources,1997,69:11.
[5]	Wohlfahrt-Mehrens M;Vogler C;Garche J .Aging mechanisms of lithium cathode materials[J].Journal of Power Sources,2004,127:58.
[6]	Xia YY.;Yoshio M.;Zhou YH. .CAPACITY FADING ON CYCLING OF 4 V LI/LIMN2O4 CELLS[J].Journal of the Electrochemical Society,1997(8):2593-2600.
[7]	Lee K S;Myung S T;Bang H J;Chung S and Sun Y.K .Co-precipitation synthesis of spherical Li1.05M0.05Mn1.9O4 (M=Ni Mg AI) spinel and its application for lithium secondary battery cathode[J].Electrochimica Acta,2007,52:5201.
[8]	Eftekhari A;Moghaddam A B;Yazdani B;Moztarzadeh E .Effects of metal source in metal substitution of lithium manganese oxide spinel[J].Electrochimica Acta,2006,52:1491.
[9]	Shi SQ.;Ouyang C.;Wang DS.;Chen LQ.;Huang XJ. .The effect of cation doping on spinel LiMn2O4: a first-principles investigation[J].Solid State Communications,2003(9):531-534.
[10]	Gnanaraj J S;Pol V G;Gedanken A;Aurbach D .Improving the high-temperature performance of LiMn2O4 spinel electrodes by coating the active mass with MgO via a sonochemical method[J].Electrochemistry Communications,2003,5:940.
[11]	Ha H W;Yun N J;Kim K .Improvement of electrochemical stability of LiMn2O4 by CeO2 coating for lith ium-ion batteries[J].Electrochimica Acta,2007,52:3236.
[12]	Liu HW;Cheng CX;Zongqiuhu;Zhang KL .The effect of ZnO coating on LiMn2O4 cycle life in high temperature for lithium secondary batteries[J].Materials Chemistry and Physics,2007(2/3):276-279.
[13]	Wu X M;Li X H;Wang S W;Wang Z Zhang Y.H Xu M.F and He Z.Q .Preparation and characterization of lithium-ion-conductive Li1.3Al0.3Ti1.7(PO4)3 thin films by the solution deposition[J].Thin Solid Films,2003,425:103.
[14]	Fu Z W;Qin Q Z .Electrochemical and electrochromic properties of niobium oxide thin films fabricated by pulsed laser deposition[J].Journal of the Electrochemical Society,1999,146:3914.
[15]	Jang DH.;Oh SM.;Shin YJ. .DISSOLUTION OF SPINEL OXIDES AND CAPACITY LOSSES IN 4V LI/LIXMN2O4 COILS[J].Journal of the Electrochemical Society,1996(7):2204-2211.
[16]	Aurbach D .Review of selected electrode-solution interactions which determine the performance of Li and Li ion batteries[J].Journal of Power Sources,2000,89:206.
[17]	Wang E;Ofer D;Bowden W;Iltchev N Moses R and Brandt K .Stability of lithium ion spinel cells.Ⅲ.Improved life of charged cells[J].Journal of the Electrochemical Society,2000,147:4023.

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Synthesis and characterization of Li1.3Al0.3Ti1.7(PO4)3-coated LiMn2O4 by wet chemical route

参考文献