Synthesis and characterization of layered Li（Ni1/3Mn1/3CO1/3）O2 cathode materials by spray-drying method

• Published in: Transactions of Nonferrous Metals Society of China Vol. 17; no. 2; pp. 291 - 295
• Main Author: 刘智敏 胡国荣 彭忠东 邓新荣 刘业翔
• Format: Journal Article
• Language: English
• Published: 2007
• Subjects: Li（Ni1/3Mn1/3CO1/3）O2; 喷雾干燥法; 层状阴极材料; 锂离子电池
• ISSN: 1003-6326

Spherical Li（Ni1/3Mn1/3Co1/3）O2 was prepared via the homogenous precursors produced by solution spray-drying method. The precursors were sintered at different temperatures between 600 and 1 000 ℃ for 10 h. The impacts of different sintering temperatures on the structure and electrochemical performances of Li（Ni1/3Mn1/3Co1/3）O2 were compared by means of X-ray diffi＇actometry（XRD）, scanning electron microscopy（SEM）, and charge/discharge test as cathode materials for lithium ion batteries. The experimental results show that the spherical morphology of the spray-dried powers maintains during the subsequent heat treatment and the specific capacity increases with rising sintering temperature. When the sintering temperature rises up to 900 ℃, Li（Ni1/3Mn1/3Co1/3）O2 attains a reversible capacity of 153 mA·h/g between 3.00 and 4.35 V at 0.2C rate with excellent cyclability.