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球形Li[Ni_(0.8)Co_(0.1)Mn_(0.1)]O_2的合成及性能研究 被引量:3

Synthesis and electrochemical properties of Li[Ni_(0.8)Co_(0.1)Mn_(0.1)]O_2 with spherical structure
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摘要 采用氨配合氢氧化物共沉淀法合成了前驱体[Ni0.8Co0.1Mn0.1](OH)2,并对其合成工艺进行了研究。经过高温焙烧制备了锂离子电池正极材料Li[Ni0.8Co0.1Mn0.1]O2,研究了焙烧温度对其形貌及性能的影响。实验表明,水浴恒温50℃同时氮气保护下,控制溶液pH=11.0,氨水与金属盐浓度比为0.5:1,搅拌速度为800r/min时,能够合成出粒径均一、高振实密度的球形前驱体;在氧气气氛下,焙烧温度为800℃时,制备出球形形貌、粒径约为12μm的正极材料。其模拟电池在18mA/g的电流密度下首次放电比容量达到187.9mAh/g,循环20次容量保持率为90.0%。 The spherical Li[Ni0.8Co0.1Mn0.1]O2 powders were synthesized by heating the precursor [Ni0.8Co0.1Mn0.1](OH)2 powders which were prepared via ammonia-hydroxide co-precipitation method.The optimized synthesis condition to obtain the precursor with a homogeneous particle size distribution and a high tap density was as following:50 ℃,pH=11.0,stirring speed=800 r/min,the concentration ratio of ammonia to metal-salt=0.5 and under N2 atmosphere.In addition,the spherical-shaped Li[Ni0.8Co0.1Mn0.1]O2 particles with diameter of 12μm were obtained after firing the precursor under O2 atmosphere.Electrochemical tests show that Li[Ni0.8Co0.1Mn0.1]O2 prepared by this method deliveres an initial specific discharge capacity of 187.9 mAh/g at the current density of 18 mA/g,with a capacity retention rate up to 90.0% after 20 cycles.
出处 《电源技术》 CAS CSCD 北大核心 2011年第1期32-35,共4页 Chinese Journal of Power Sources
基金 江苏省自然科学基金项目(BK200718) 国家青年自然科学基金项目(20803035)
关键词 锂离子电池 正极材料 共沉淀法 Li[Ni0.8Co0.1Mn0.1]O2 [Ni0.8Co0.1Mn0.1](OH)2 lithium ion battery cathode co-operation method Li[Ni.0.8Co0.1Mn0.1]O2 [Ni0.8Co0.1Mn0.1](OH)2
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参考文献17

  • 1JIANG J, DAHN J R. Effects of particle size and electrolyte salt on the thermal stability of Li0.5CoO2 [J]. Electrochimica Acta, 2004, 49 ( 16): 2661-2666.
  • 2LI W, REIMERS J N, DAHN J R. In sire X-ray diffraction and electrochemical studies of Li1-xNiO2 [J]. Solid State Ionics, 1993, 67: 123-130.
  • 3BROUSSELY M, PERTON F, BIENSAN P, et al. LixNiO2, a promising cathode for rechargeable lithium batteries [J]. J Power Sources, 1995, 54: 109-114.
  • 4YAMADA A, TANAKA M, TANAKA K, et al. Jahn-Teller instability in spinel Li-Mn-O [J].Journal of Power Sources, 1999, 81: 73-78.
  • 5PARK Y J, KIM J G, KIM M K, et al. Electrochemical properties of LiMn2O4 thin films: suggestion of factors for excellent rechargeability [J]. Journal of Power Sources, 87(1): 69-77.
  • 6CAO Hui, ZHANG Yao, ZHANG Jian, et al. Synthesis and electrochemical characteristics of layered LiNi0.6Co0.2Mr0.2O2 cathode material of lithium ion batteries[J].Solid State Ionics, 2005, 176: 1207- 1211.
  • 7LEE M H, KANG Y J, MYUNG S T, et al. Synthetic optimization of Li [Ni1/3Co1/3Mn1/3]O2 via co-precipitation [J]. Electrochimica Acta, 2004, 50: 939-948.
  • 8KIM M H, SHIN H S, SHIN D, et al. Synthesis and electrochemical properties of Li[Ni0.8Co0.1Mn0.1]O2 and Li[Ni0.8Co0.2]O2 via co-precipitation[J]. Journal of Power Sources, 2006, 159(2): 1328-1333.
  • 9JOUANNEAU S, EBERMAN K W, KRAUSE L J, et al. Synthesis, characterization and electrochemical behavior of improved Li [NixCo1-2xMnx]O2 (0.1≤x≤0.5)[J]. J Electrochem Soc, 2003, 150(12): A 1637-A 1642.
  • 10王希敏,王先友,易四勇,曹俊琪.层状锂离子电池正极材料LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2的制备及性能[J].过程工程学报,2007,7(4):817-821. 被引量:19

二级参考文献46

  • 1李建刚,万春荣,杨冬平,杨张平.LiNi_(3/8)Co_(2/8)Mn_(3/8)O_2正极材料氟掺杂改性研究[J].无机材料学报,2004,19(6):1298-1306. 被引量:24
  • 2胡学山,刘兴泉.LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2的制备及电化学性能[J].电源技术,2006,30(3):183-186. 被引量:14
  • 3肖劲,曾雷英,陈召勇,赵浩,彭忠东.离子电池正极材料LiNi_(0.5)Mn_(0.5)O_2的合成[J].无机化学学报,2006,22(4):685-690. 被引量:10
  • 4Zhang Duomo,Chin Power Sources (in Chinese),1997年,21卷,2期,65页
  • 5He Wanning,Chin Power Sources (in Chinese),1995年,19卷,5期,1页
  • 6团体著者,Analytical Chemistry(第2版),208页
  • 7Liu Z L,Yu A S,Lee J Y.Synthesis and Characterization of LiNi1-x-yCoxMnyO2 as the Cathode Materials of Secondary Lithium Batteries[J].J.Power Sources,1999,81/82:416-419.
  • 8Liao L,Wang X Y,Wang X M,et al.Synthesis and Electrochemical Properties of Layered Li(Ni0.333Co0.333Mn0.293Al0.04)O2-zFz Cathode Materials Prepared by the Sol-Gel Method[J].J.Power Sources,2006,160(1):657-661.
  • 9Tang A D,Huang K L.Electrochemical Properties and Structural Characterization of Layered LixNi0.35Co0.3Mn0.35O2+d Cathode Materials[J].Mater.Sci.Eng.B,2005,122(2):115-120.
  • 10Li J G,He X M,Zhao R S,et al.Stannum Doping of Layered LiNi3/8Co2/8Mn3/8O2 Cathode Materials with High Rate Capability for Li-ion Batteries[J].J.Power Sources,2006,158(1):524-528.

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