AlPO4包覆LiNi1/3Co1/3Mn1/3O2的制备与电化学性能

journal6 ›› 2010, Vol. 31 ›› Issue (2): 89-93.

AlPO₄包覆LiNi_1/3Co_1/3Mn_1/3O₂的制备与电化学性能

（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）

出版日期:2010-03-25 发布日期:2012-04-18
通讯作者: 何则强（1974-），男，湖南益阳人，吉首大学生物资源与环境科学学院副教授，博士.E-mail:csuhzq@163.com.
作者简介:梁凯(1985- ),男,湖南常德人,吉首大学化学化工学院硕士研究生，主要从事应用电化学研究
基金资助:
国家自然科学基金(20873054)；中国博士后科学基金(2005037700)；湖南省自然科学基金(07JJ3014)；湖南省教育厅科学研究项目 (07A058)；吉首大学科研项目(09JDY008)

Preparation and Electrochemical Properties of AlPO₄-Coated LiNi_1/3Co_1/3Mn_1/3O₂

（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)

Online:2010-03-25 Published:2012-04-18

摘要/Abstract

摘要：采用高温固相法制备LiNi_1/3Co_1/3Mn_1/3O₂，溶胶-凝胶法制备AlPO₄包覆LiNi_1/3Co_1/3Mn_1/3O₂材料(AlPO₄-coated LiNi_1/3Co_1/3Mn_1/3O₂).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 LiNi_1/3Co_1/3Mn_1/3O₂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LiNi_1/3Co_1/3Mn_1/3O₂的循环性能和倍率性能显著改善.

关键词： LiNi_1/3Co_1/3Mn_1/3O₂, 磷酸铝, 包覆

Abstract: LiNi_1/3Co_1/3Mn_1/3O₂was synthesized by high temperature solid state method,and AlPO₄-coated LiNi_1/3Co_1/3Mn_1/3O₂ was prepared by sol-gel using LiNi_1/3Co_1/3Mn_1/3O₂,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 LiNi_1/3Co_1/3Mn_1/3O₂. AlPO₄ can minimize the side reaction between electrode and electrolyte solution,reduce the surface film impedance and charge transferring impedance,and increase the diffusion vecocity of lithium ion.Thus,the cycling performance and rate performance of LiNi_1/3Co_1/3Mn_1/3O₂ are greatly improved.

Key words: LiNi_1/3Co_1/3Mn_1/3O₂, AlPO₄, coating

梁凯, 熊利芝, 唐明, 何则强. AlPO₄包覆LiNi_1/3Co_1/3Mn_1/3O₂的制备与电化学性能[J]. journal6, 2010, 31(2): 89-93.

LIANG Kai, XIONG Li-Zhi, TANG Ming, HE Ze-Qiang. Preparation and Electrochemical Properties of AlPO₄-Coated LiNi_1/3Co_1/3Mn_1/3O₂[J]. journal6, 2010, 31(2): 89-93.

参考文献

[1] 吴海燕,王建华,李斌,郭玉忠.锂离子电池正极材料Li(Co1/3Ni1/3Mn1/3)O2的研究进展 [J].材料导报,2007,11(S3):299-302.

[2] SHAJU K M,RAO S R,CHOWDARI B V R.Performance of layered Li(Ni1/3Co1/3Mn1/3)O2 as cathode for Li-ion batteries [J].Electrochimica Acta,2002,48:145-151.

[3] CHO J,KIM T J,KIM Y J,et al.High-Performance ZrO2-Coated LiNiO2 Cathode Material [J].Electrochem. Solid-State lett.,2001,4(10):A159-A161.

[4] OMANDA H,BROUSSE T,MARHIC C,et al.Improvement of Thermal Stability of LiNi0.2SCo0.2O2 cathode by SiOx Protective Coating [J].J. Electrochem. Soc.,2004,151(6):A922-A929.

[5] KERLAU M,REIMER J A,CAINS E J.Layered Nickel-Oxide-Based Cathodes for Lithium Cells:Analysis of Performance Loss Mechanisms [J].J. Electrochem. Soc.,2005,152(8):A1 629-A1 632.

[6] 王希敏,王先友,罗旭芳,等.锂离子正极材料Li(Co1/3Ni1/3Mn1/3)O2 [J].化学进展,2006,18(12):1 720-1 724.

[7] 黄原君.锂离子正极材料Li(Co1/3Ni1/3Mn1/3)O2的合成及改性研究 [D].湘潭:湘潭大学,2007:1-15.

[8] 范茂松.Li(Co1/3Ni1/3Mn1/3)O2材料的制备及电化学性能研究 [D].北京:北京化工大学,2006:23-51.

[9] 陈元端.Li(Co1/3Ni1/3Mn1/3)O2的表面修饰及电化学性能研究 [D].四川:四川大学,2006:1-32.

[10] CHO J,KIM H,PARK B.Comparison of Overcharge Behaviour of AlPO4-Coated LiCoO2 And LiNi0.8Co0.1Mn0.1O2 Cathode Material in Li-Ion Cell [J].J. Electrochem. Soc.,2004,151(10):A1707- A1711.

[11] CHO J,KIM T J,KIM J,et al.Synthesis,Thermal,and Electrochemical Properties of AlPO4-Coated LiNi0.8Co0.1Mn0.1O2 Cathode Materials for a Li-Ion Cells [J].J.Electroehem.Soc.,2004,151(11):A1 899-A1 904.

[12] KIM J M,CHUNG H T.The First Cycle Characteristics of Li[Ni1/3Co1/3Mn1/3]O2 Charged up to 4.7 V [J].Electrochimica Acta,2004,49(6):937-944.

[13] LEE M H,KANG YJ,MYUNG S T,et al.Synthetic Optimization of Li[Ni1/3Mn1/3Co1/3]O2 Via Co-Precipitation [J].Electrochimica Acta,2004,50(4):939-948.

[14] JANG S B,KANG S H,AMINE K,et al.Synthesis and Improved Electrochemical Performance of Al (OH)3-Coated Li[Ni1/3Mn1/3Co1/3]O2 Cathode Materials at Elevated Temperature [J].Electrochimica Acta,2005,50(20):4 168- 4 173.

[15] LI J,ZHANG Z R,GUO X J,et al.The Studies on Structural and Thermal Properties of Delithiated Lix[Ni1/3Mn1/3Co1/3]O2 (0<x≤1) as a Cathode Material in Lithiumion Batteries [J].Solid State Ionics,2006,177(17-18):1 509-1 516.

AlPO₄包覆LiNi_1/3Co_1/3Mn_1/3O₂的制备与电化学性能

Preparation and Electrochemical Properties of AlPO₄-Coated LiNi_1/3Co_1/3Mn_1/3O₂

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