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AlPO4包覆LiNi1/3Co1/3Mn1/3O2的制备与电化学性能
引用本文:梁凯,熊利芝,唐明,何则强. AlPO4包覆LiNi1/3Co1/3Mn1/3O2的制备与电化学性能[J]. 吉首大学学报(自然科学版), 2010, 31(2): 89-93
作者姓名:梁凯  熊利芝  唐明  何则强
作者单位:(1.吉首大学化学化工学院,湖南 吉首 416000;2.吉首大学生物资源与环境科学学院,湖南 吉首 416000;3.长沙理工大学化学与环境工程系,湖南 长沙 410076)
基金项目:国家自然科学基金,中国博士后科学基金,湖南省自然科学基金,湖南省教育厅科学研究项目,吉首大学科研项目 
摘    要:采用高温固相法制备LiNi1/3Co1/3Mn1/3O2,溶胶-凝胶法制备AlPO4包覆LiNi1/3Co1/3Mn1/3O2材料(AlPO4-coated LiNi1/3Co1/3Mn1/3O2).并用XRD、SEM检测等对材料进行了表征,用X-射线衍射、扫描电镜分析以及电化学测试等手段对样品的微观结构、表面形貌和电化学性能进行了研究.结果表明:在AlPO4-coated LiNi1/3Co1/3Mn1/3O2中,AlPO4以无定形态包覆于的表面;AlPO4的存在,阻止了电极与电解质溶液之间的副反应,降低了电极的表面膜阻抗和电荷转移阻抗,加快了锂离子的扩散速度,使得LiNi1/3Co1/3Mn1/3O2的循环性能和倍率性能显著改善.

关 键 词:LiNi1/3Co1/3Mn1/3O2  磷酸铝  包覆  

Preparation and Electrochemical Properties of AlPO4-Coated LiNi1/3 Co1/3 Mn1/3O2
LIANG Kai,XIONG Li-Zhi,TANG Ming,HE Ze-Qiang. Preparation and Electrochemical Properties of AlPO4-Coated LiNi1/3 Co1/3 Mn1/3O2[J]. Journal of Jishou University(Natural Science Edition), 2010, 31(2): 89-93
Authors:LIANG Kai  XIONG Li-Zhi  TANG Ming  HE Ze-Qiang
Affiliation:(1.College of Chemistry and Chemical Engineering,Jishou University,Jishou  416000,Hunan China;2.College of Biology Resource and Environmental Sciences,Jishou University,Jishou 416000,Hunan China;3.School of Chemistry and Biological Engineering,Changsha University of Science and Technology,Changsha 410076,China)
Abstract:LiNi1/3Co1/3Mn1/3O2 was synthesized by high temperature solid state method,and AlPO4-coated LiNi1/3Co1/3Mn1/3O2 was prepared by sol-gel using LiNi1/3Co1/3Mn1/3O2,Al(NO3)3·9H2O and H3PO4 as raw material.The microstructure,surface morphology and electrochemical properties were characterized by various electrochemical methods in combination with X-ray diffraction(XRD) and scanning electron microscope(SEM).Results show that amorphous AlPO4 is coated on the surface in AlPO4-coated LiNi1/3Co1/3Mn1/3O2.AlPO4 can m...
Keywords:LiNi1/3CO1/3Mn1/3O2
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