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掺锶尖晶石相-LiSr_xMn_(2-x)O_4的合成和电化学性能研究 被引量：5

An investigation on Sr-doped spinel phase-LiSr xMn _(2-x ) O _4
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摘要 采用固相合成方法制备掺锶尖晶石型锂锰氧化物 ,通过X射线衍射法对材料的结构进行了表征 .结果表明 ,当掺入的锶含量较低时 ,得到的产物具有尖晶石结构特征 ,并表现出极佳的电化学性能 ,材料在充放电循环 90周次后仍能保持 Sr_doped spinel phase_LiSrxMn 2-x O4 was successfully prepared by solid_state method. Structural and electrochemical characterizations were carried out. Although Sr 2+ has a large ion radius_1.12 ,the spinel structure can be well maintained for LiSrxMn 2-x O4 sample as far as the x value doesn't surpass 0.05. Electrochemical study presents supporting evidence that doping the stoichiometric LiSrxMn 2-x O4 phase with Sr is an effective way to improve the cycleability of LiSrxMn 2-x O4 spinel material. A remarkable enhancement of the cycleability with retention of the initial capacity >90 % after 95 cycles was observed for the Sr_doped spinel.
作者 詹晖 周运鸿
机构地区 武汉大学化学与分子科学学院
出处 《电化学》 CAS CSCD 2002年第2期165-171,共7页 Journal of Electrochemistry
基金 国家自然科学基金 ( 2 983 3 0 90 )资助项目
关键词 锶 合成 电化学性能 LiSrxMn2-xO4 尖晶石相 循环性能 锂锰氧化物 掺杂 LiSr xMn _2-xO_4, Spinel phase,Cycleability
分类号 O646 [理学—物理化学]
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参考文献8

  • 1XIA Yong-yao, ZHOU Yun-hong, Masaki Yoshio. Capacity fading on cycling of 4 V Li/LiMn2O4 cells[J]. J.Electrochem.Soc.,1997,144:2 593～2 600.
  • 2Dong H Young, Young J Shin, Seung M Oh. Dissolution of spinel oxides and capacity losses in 4 V Li/LixMn2O4 Cells[J]. J.Electrochem. Soc.,1996,143:2 204～2 211.
  • 3Guohua L, Ikuta H, Uchida Y, et al,The spinel phases LiMyMn2-yO4(M=Co,Cr,Ni) as the cathode for rechargeable lithium batteries[J]. J.Electrochem. Soc.,1996,143:178～182.
  • 4Arora P, Popov B N, White R E, Electrochemical investigation of Cobalt-Doped LiMn2O4 as cathode material for lithium-ion batteries[J]. J.Electrochem. Soc.,1998 145:807～815.
  • 5SUN Yang-Kook, KIM Dong-Won, Choi Young-Min. Synthesis and characterization of spinel LiMn2-xNixO4 for lithium/polymer battery applications[J]. J.Power Sources,1999,79:231～237.
  • 6Cras F Le,Bloch D, Anne M,et al. Lithium intercalation in Li-Mg-Mn-O and Li-Al-Mn-O spinels[J]. Solid State Ionics,1996,89:203～213.
  • 7Cras F Le, Bloch D, Anne M,et al.Lithium intercalation in Li-Mg-Mn-O and Li-Al-Mn-O spinels[J].Solid State Ionics,1996,89:203～213.
  • 8Cha C S,Li C M, Yang H X, et al.Powder microelectrodes[J]. J.Electroanalytical Chem.,1994,368:47～54.

同被引文献39

  • 1陈召勇 刘兴泉 贺益.Li1.1Mn2O3.95F0.05锂离子二次电池正极材料[A]..第十一次全国电化学会议论文集[C].Nanjing(南京),2001.B015.
  • 2Ein-EliY Howard W F.LiCu(Ⅱ)xCu(Ⅲ)yMn(Ⅲ)，Ⅳ[2-(x+y)]O4：5 V cathode materials[J].J Electrochem Soc,1997,144(8):205-207.
  • 3LIU W, KOWAL K, FARRIGNTON G C. Electrochemical characteristics of spinel plase LiMn2O4-based cathode materialsprepared by the Pechini process[J]. J Electrochem Soc, 1996,143:3 590.
  • 4THACKERY M M, YANG S-H, KAHAIAN A J, et al. Structual fatigue in spinel electrodes in high voltage (4 V) LI/LixMnO4 cells [J]. Electrochem and Solid State Letter, 1998,1 ( 1 ):7-9.
  • 5JANG D H, SHIN Y J, DH S M. Electrolyte effects on spinel dissolution and cathodic capacity losses in 4 V Li/LixMnO4 rechargeable cells[J]. J Electrochem Soc, 1997,144:3342.
  • 6HWANG B J, SANTHANAM R, GHU S. ynthesis and characterization of multidoped lithium manganese oxide spinel,Li1.02Co0.1Ni0.1Mn1.8O4,for rechargeable lithium barreries [J]. Journal of Power Sources, 2002,108: 250-255.
  • 7MORCRETTE M, BARBOUX P, Perriere J, et al. Non-stoichiometry in LiMn2O4 thin films by laser ablation[J].Solid State Ionics,2001,138:213-219.
  • 8Thackery M M.Prog Solid State Chem[J],1997,25:1
  • 9Tarascon J M,Wang E,Shakoohi F K,Mckinnon W R,Coloson S.J Electrochem Soc[J],1991,138:2859
  • 10Ohzuhu T,Kitogawa M,Hirai T.J Elecrochem Soc[J],1990,13:7769

引证文献5

二级引证文献8

电化学
2002年 第2期

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