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Ni/Co比例对LiCo_xNi_(1-x)O_2电化学性能的影响 被引量：3

Influence of Ni/Co Ratio for LiCo_xNi_(1-x)O_2 on Electrochemical Performance
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摘要 采用固相反应法合成了一系列 LiCoxNi1-xO2（0≤x≤1）材料,用 XRD和电化学实验方法研究了Co3+取代Ni3+对LiNiO2材料电化学性能的影响.结果表明,当Ni/Co比例为8:2时材料具有最好电化学性能,比容量可以达到 170～180mAh/g,并且具有好的抗过充性能. A series of LiNi1-xCoxO2 (0<x< 1) were synthesized by solid state reaction. The effect of Co3+ substitution on Ni3+ content was investigated by XRD and electrochemical techniques. It is shown that LiNi0.8C0.2O2 has the best electrochemical performance, delivering specific capacities of 170-180 mAh/g and good over-charge resistance compared with LiNiO2.
作者 仇卫华 林传刚 李智敏 路中琴 胡环宇 洪佳玲
机构地区 北京科技大学材料科学与工程学院固体电解质研究室
出处 《北京科技大学学报》 EI CAS CSCD 北大核心 2002年第5期529-532,共4页 Journal of University of Science and Technology Beijing
关键词 Ni/Co比例 LiCoxNi1-xO2 锂离子电池 正极材料 电化学性能 抗过充性能 比容量 lithium ion battery positive electrode material electrochemical performance
分类号 TM912.2 [电气工程—电力电子与电力传动] O646 [理学—物理化学]
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参考文献4

  • 1Delmas C, Menetrier M,Croguenenec L, et al. An overview of the Li(Ni,M)O2 systems: sythesis, stuctures and properties [J]. Electrochimica Acta, 1999(45): 243
  • 2Kaoru Dokko, Matusuhiko Nishizawa, Soichi Horikoshi, et al. In situ observation of LiNiO2 single-particle fracture during Li-ion extraction and insertion [J]. Electrochemical and Solid-State Letters, 2000, 3(3): 125
  • 3林传刚.二次锂离子电池正极材料LiNi1-xMxO2(M=Co,Al,0≤x≤1)的制备及电化学性能研究[D].北京科技大学,2001
  • 4Lee Yung-Keun, Kim Kwang-Bum. electrochemical and structure chracateriaztion of LiNi1-yCoyO2 (0≤y≤0.2)postive electrodes during initial cycling [J]. Journal of The ElectroChemical Society, 2000, 147 (5): 1709

同被引文献27

  • 1李发喜.[D].北京:北京科技大学,2002.
  • 2Yamada Atsuo Kudo Yoshihiro Liu K Y.Phase diagram of Lix(MnyFe1-y)PO4(0≤x，y≤ 1) [J].J Electrochem Soc,2001,148:1153-1153.
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  • 5Saadoune I,Delmas C.On the LiNi0.8Co0.2O2 system[J].Journal of Solid State Chemistry,1998,136:8～15.
  • 6Arai H,Okadas S,Sakurai Y,et al.Electrochemical and thermal behavior of LiNi1-xMxO2[J].J Electrochem Soc,1997,144:3 117～3 119.
  • 7Delmas C,Menetrier M,Croguennec L,et al.An overview of the Li(Ni,M)O2 systems:syntheses,structures and properties[J].Electrochimica Acta,1 999,45(1～2):243～253.
  • 8Cho J,Jung H,Park Y,et al.Electrochemical properties and thermal stability of LiaNi1-xCoxO2 cathode materials[J].J Electrochem Soc,2000,147(1):15～20.
  • 9ZHU Xian-jun.Study on layered lithium nickel-based oxides as cathode materials for the application of lithium-ion batteries[D].Wuhan:Wuhan University,2003.
  • 10Lee K K,Kim K B.Electrochemical and structural characterization of Li Ni1-yCoyO2(0≤y≤0.2)positive electrodes during initial cycling[J].J Electrochem Soc,2000,147(5):1 709～1 717.

引证文献3

二级引证文献14

北京科技大学学报
2002年 第5期

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