Synthesis of spherical LiNi1/3Co1/3Mn1/3O2 cathode materials for Li-ion batteries

被引：19
作者：
Li, Jiangang
He, Xiangming [1 ]
Fan, Maosong
Zhao, Rusong
Jiang, Clhangyin
Wan, Chunrong
机构：
[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
[2] Beijing Inst Petrochem Technol, Sch Mat & Chem Engn, Beijing 102617, Peoples R China
来源：
IONICS | 2006年 / 12卷 / 01期
关键词：
spherical LiNi1/3Co1/3Mn1/3O2; carbonate; controlled crystallization; spherical (Ni1/3Co1/3Mn1/3)(3)O-4;
D O I：
10.1007/s11581-006-0006-6
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Spherical LiNi1/3Co1/3Mn1/3O2 was successfully prepared by controlled crystallization. The preparation started with the spherical coprecipitate of Ni1/3Co1/3Mn1/3 CO3 from NiSO4, CoSO4, MnSO4, NH4HCO3, and NH3 center dot H2O, followed by pyrolysis of Ni1/3Co1/3Mn1/3CO3 at 600 degrees C for 3 h. The X-ray diffraction analysis showed that the homogeneous cubic (Ni1/3Co1/3Mn1/3)(3)O-4 was obtained after the pyrolysis. Spherical LiNi1/3Co1/3Mn1/3O2 was obtained by sintering of the mixture of as-obtained (Ni1/3Co1/3Mn1/3)(3)O-4 and LiOH center dot H2O at 900 degrees C for 6 h in air. As-prepared spherical LiNi1/3Co1/3Mn1/3O2 presented initial discharge capacity of 162.9 mA h g(-1) and capacity retention of 98% at 50th cycle.
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页码：77 / 80
页数：4
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