南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (3): 343–350.
章福平1，Hasuck Kim2 , Byungwoo Park3
Zhang Fu一Ping1**，Hasuck Kim 2，Byungwoo Park 3
摘要： 摘要:具有层状结构的掺杂稀上元素的铿离子电池正极材料LiCO1一yReyO2(Re=Er, Yb, Ho, Tm, Y, Lu;
y=0, 0. 005-0.055)经高温固相反应合成.粉末X-射线衍射结果显示LiCO1一yReyO2的六方晶胞参数c和a随y
的增大分别增大和减小.循环伏安扫描并未出现因掺杂稀上元素而产生的新峰.当y=0,0.005,0.007,0. 014,
0.028,0.042和0. 055时，Li/LiCO1一yReyO2:电池以2 mA/cm`电流密度在4.4-3.OV间充放电，首次充电容量
(Cc)分别为:136. 9, 117. 4, 141. 2, 124. 8, 139. 7, 133. 8, 100. 6 mAh/g;首次放电容量(Cd)分别为:98. 4,90. 2,
102.1,101.8,102.2,100.1和76.6 mAh/g, y=0. 028和0的扣式电池以1 C (140 mA/g)倍率充放电40个循环
后，放电容量分别为92和21 mAh/g.这些结果充分表明掺杂稀上元素能提高LiCO1一yReyO2的电池性能.
| [1]Zhang H P，Yang L C，Fu L J，et al. Corms shell structured electrode materials for lithium ion batteries. Journal of Solid State Electro- chemistry, 2009，13(10):1521一1527. [2]Xiao L, Yang Y，Zhao Y，et al. Enhanced elec trochemical performance of submicron LiCoO2 synthesized by polymer pyrolysis method. Jour- nal of Solid State Electrochemistry, 2008，12 (2):149一153. [3]Yang Z, Yang W，Tang Z. Pillared layered Li1-2X CaX CoO2 cathode materials obtained by catiomc exchange under hydrothcrmal condi tions. Journal of Power Sources，2008，184(2)557~561 [4]Mukai K，Ikedo Y，Nozaki H，et al. Magnetic phase diagram of layered cobalt dioxide Li, CoO2. Physical Review Letters，2007，99(8):087601/1~4 [5]Bai Y，Shi H，Wang Z, et al. Performance im- provement of LiCoO2 by molten salt surface modification. Journal of Power Sources, 2007，167(2):504一5O9. [6]Lee S W. Lee S G. Han K S. Sub micron Li CoO2 manufactured in a single synthetic step using eutectic self-mixing method. Journal of Power Sources，2006，163(1):274一277 [7]Liang H Y，Qiu X P，Zhang S C, et al. Study of lithiated nation ionomer for lithium batteries. Journal of Applied Electrochemistry, 2004，34 (12):1211一1214. [8]Kim H S, Choi G Y，Moon S 1，et al. Electro- chemical properties of Li ion polymer battery with gel polymer electrolyte based on polyure- thane. Journal of Applied Electrochemistry, 2003，33(6):491一496. [9]Rao M M, Liebenow C, Jayalakshmi M, et al. Higlrtemperature combustion synthesis and electrochemical characterization of LiNiO2，L i- CoO2 and LiMn2O4.for lithiurrrion secondary batteries. Journal of Solid State Electrochemis- try, 2001，5(5):348一354. [10]Zhang F P. Studies on the structure of LiCoO2 synthesized with tartaric acid and the behavior of its rechargeble lithium battery. Electrochem- istry, 1995, 1(3): 342-347.章福平.酒石酸法合成的LiCoO2的结构及其锂电池行为研究. 电化学，1995, 1(3): 342-347). [11]Aurbach D, Markovsky B, Salitra G, et al. Re view on electrod-electrolyte solution interac-tons, related to cathode materials for Li-ion batteries. Journal of Power Sources, 2007，165 (2).491一499. [12]Xia H，Lu L, Meng Y S, et al. Phase transi- dons and high-voltage electrochemical b-ehavior of LiCoO2 thin films grown by pulsed laser dep- osition. Journal of the Electrochemical Society, 2007，154(4):A337一A312. [13]Wang X, Sone Y，Segami G, et al. Under- standing volume change in lithiurrrion cells dut- ing charging and discharging using in situ meas- urements. Journal of the Electrochemical Socie ty, 2007，154(1):A14一A21. [14]Markovsky B, Rodkin A，Salitra G, et al.The impact of Co2+ ions in solution on the perform- ance of LiCoO2，Li，and lithiated graphite elec- trodes. Journal of the Electrochemical Society, 2004，151(7):A1068一A1076. [15]Kong L Y，Zhang F P, Pan Y，et al. Study progress of the cathodic materials for 4 V lithi- um-ion batteries. Chinese Battery Industry, 2006, 11(1); 53-57.(孔令宇，章福平，潘毅等.4V铿离子电池正极材料研究进展.电池工业，2006, 11(1) : 53一57. [16]Yazami R，Ozawa Y，Gabrisch H，et al. Mech- anism of electrochemical performance decay in LiCoO2 aged at high voltage. Electrochimica Acta, 2004，50(2一3):385一390. [17]Zhang F P. Studies on the structure of LiNi0.3 Co0.7O2and the behavior of its lithium battery. Chemiccal Journal of Chinese University, 1995， 16(5): 770-774.章福平.LiNi0.3Co0.7O2的结构及其铿电池行为研究.高等学校化学学报，1995，16(5):770一774). [18]Zhao L M，Zhang F P，Pan Y，et al. Studies on the performance of LiMnx Co1-x O2synthesized by doping LiCoO2with Mn for the Li-ion batter- y. Chinese Battery industry, 2007，12(2): 105-108.(赵黎明，章福平，潘毅等.锰掺杂的钻酸铿材料LiMn, Co1-x O2):的电化学研究.电池工业，2007, 12(2): 105-108). [19]Waki S, Dokko K，Itoh T，et al. High-speed voltammetry of Mn-doped LiCoO2 using a mi- croclectrode technique. Journal of Solid State Electrochemistry, 2000，4(4):205一209. [20]Wang L，Li J，He X, et al. Recent advances in layered LiNix Coy. Mn1-x-yO2cathode materials for lithium ion batteries. Journal of Solid State Electrochemistry, 2009，13 (8):1157一1164. [21]Park S G, Lee S R，Cho W 7，et al. Depend- ence of Al2O3、coating thickness and annealing conditions on microstructural and clcctrochcmi- cal properties of LiCoO2 film. Metals and Matte rials international，2010，16(1):93一98. [22]Oh Y，Ahn D, Nam S, et al.The effect of Al2O3-coating coverage on the electrochemical properties in LiCoO2 thin films. Journal of Solid State Electrochemistry, 2010，14(7): 123一1240. [23]Hwang Y J，Chen C Y，Cheng M Y，et al. Mechanism study of enhanced electrochemical performance of ZrO2-coated LiCoO2 in high voltage region. Journal of Power Sources 2010，195(13):4255一4265. [24]Subba Rao G V，Chowdari B V R，Lindner H J. Yttrium-doped Li(Ni，Co)O2An improved cathode for Li-ion batteries. Journal of Power Sources, 2001，97一98:313一315. [25]Li D, Huang Y，Jia D, Guo Z, et al. Synthesis and electrochemical properties of nanosized cai- bon-coated Li1-3xLax FePO4 composites. Journal of Solid State Electrochemistry, 2010，14(5): 889一895. [26]Cho Y D, Fey G T K，Kao H M. Physical and electrochemical properties of La-doped LiFe PO4/C composites as cathode materials for lithi um-ion batteries. Journal of Solid State Electro chemistry, 2008, 12(7一8):815一823. [27]Ghosh P. Mahanty S. Basu R N. Lanthanurrr doped LiCoO2cathode with high rate capability. Electrochimica Acta. 2009 54(5)，1654一1661. [28]Singhal R，Das S R，Tomar M S, et al. Syn- thesis and characterization of Nd doped LiMn2O4.cathode for Li-ion rechargeable batter- ies. Journal of Power Sources, 2007，164(2): 857一861 [29]Xie Y，Yang R，Yan L，et al. Synthesis and electrochemical characterization of Li 1.05 RExCr y Mn2-x-yO4 spinel as cathode material for rechargeable Li-battery. Journal of Power Sources, 2007，168(1):272一277. [30]Cho J,Kim Y .l，Park B. Novcl LiCoO2 Cath-ode material with Al2O3coating for a Li ion cell. Chemistry of Materials, 2000，12(12) 3788一3791. [31]Fergus J W Recent developments in cathode ma terials for lithium ion batteries. Journal of Pow er Sources, 2010，195(4):939一954. [32]Ceder G, Chiang Y M, Sadoway D R，et al. I- dentification of cathode materials for lithium batteries guided by first principles calculations. Nature, 1998，392(6677):694一696. [33]Chang W, Choi J W, Im J C, et al. Effects of ZnO coating on electrochemical performance and thermal stability of LiCoO2 as cathode material for lithiurrrion batteries. Journal of Power Sources, 2010，195(1):320一326. [34]Amatucci G G, Tarascon J M, Klein I. C. Co- balt dissolution in LiCoO2-based norraqucous rechargeable batteries. Solid State Tonics, 1996， 83(1，2):167一173. [35]Kim B, Lee J G, Choi M，et al. Correlation be tween local strain and cycle-life performance of AIPO4-coated LiCoO2 cathodes. Journal of Power Sources,2004,126(1~2):190~192. [36]Jung Y S, Cavanagh A S, Dillon A C, et al. Enhanced stability of LiCoO2 cathodes in Lithi um-ion batteries using surface modification by a tomic layer deposition. Journal of the Electro chemical Society, 2010，157(1):A75一A81. [37]Needham S A Wang G X, Liu H K，et al. Synthesis and electrochemical performance of doped LiCo2 materials. Journal of Power Sources, 2007,174(2):828~831 |
| No related articles found! |
|
||