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新型锂离子电池正极材料LiNi_(0.5)Mn_(0.5)O_2纳米晶的制备与电化学性能 被引量：3

SYNTHESIS AND ELECTROCHEMICAL PERFORMANCE OF LiNi_(0.5)Mn_(0.5)O_2 NANOCRYSTALS AS A NOVEL CATHODE MATERIAL FOR LITHIUM ION BATTERY
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摘要 运用溶胶-凝胶法成功合成了层状锂离子电池正极材料LiNi0 .5Mn0 .5O2 的纳米粒子,并利用XRD ,TEM ,SEM手段进行了表征,电化学测试性能满意.在电压范围为2 .5 - 4.5V和电流密度为0 .1mA·cm- 2 的条件下,该正极材料能释放出1 5 9.8mAh·g- 1 LiNi_(0.5)Mn_(0.5)O_2 nanoparticles as cathode material for lithium ion battery have been successfully synthesized through a sol-gel method, and characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM). Electrochemical tests show that it delivers a large discharge capacity of 159.8 mA h·g^(-1) vs. Li metal at 0.1 mA·cm^(-2)with voltage window of 2.5-4.5 V.
作者 杨小红 汪新 陈平
机构地区 池州师范专科学校化学系
出处 《安徽师范大学学报（自然科学版）》 CAS 2005年第2期189-191,共3页 Journal of Anhui Normal University(Natural Science)
基金 安徽省教育厅自然科学基金 ( 2 0 0 5kj3 97)
关键词 锂离子电池 正极材料 电化学性能 纳米晶 制备 溶胶-凝胶法 纳米粒子 电流密度 电压范围 测试性能 XRD TEM SEM Sol-gel Cathode material LiNi_(0.5)Mn_(0.5)O_2 Electrochemical performance
分类号 TB383 [一般工业技术—材料科学与工程] TM912 [电气工程—电力电子与电力传动]
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参考文献16

  • 1Ammundsen B, Paulsen J. Novel lithium-ion cathode materials based on layered manganese oxides[J]. Adv Mater, 2001, 13: 943-956.
  • 2Yoshio M., Nakamura H., Xia Y. Lithiated manganese dioxide, Li0.33MnO2, as a 3 V cathode for lithium batteries[J]. Electrochim Acta ,1999, 45: 273-283.
  • 3Lee Y S, Sun Y K, Ota S, et al., Preparation and characterization of nano-crystalline LiNi0.5Mn1.5O4 for 5 V cathode material by composite carbonate process[J]. Eelectrochem. Comm,2002, 4: 989-994.
  • 4Zhang L, Yu J, Xu A, Li Q, et al. A self-seeded, surfactant-directed hydrothermal growth of single crystalline lithium manganese oxide nanobelts from the commercial bulky particles[J]. Chem Commun, 2003, 30:2910-2911.
  • 5Myung S, Komaba S, Kumagai N, et al. Nano-crystalline LiNi0.5Mn1.5O4 synthesized by emulsion drying method[J]. Electrochim Acta, 2002, 47: 2543-2549.
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安徽师范大学学报（自然科学版）
2005年 第2期

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