کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1602428 1515907 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and electrochemical properties of LiNi0.8Al0.2−xTixO2 cathode materials by an ultrasonic-assisted co-precipitation method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Synthesis and electrochemical properties of LiNi0.8Al0.2−xTixO2 cathode materials by an ultrasonic-assisted co-precipitation method
چکیده انگلیسی
A new co-precipitation route was proposed to synthesize LiNi0.8Al0.2−xTixO2 (x=0.0-0.20) cathode materials for lithium ion batteries, with Ni(NO3)2, Al(NO3)3, LiOH·H2O, and TiO2 as the starting materials. Ultrasonic vibration was used during preparing the precursors, and the precursors were protected by absolute ethanol before calcination in the air. The influences of doped-Ti content, calcination temperature and time, additional Li content, and ultrasonic vibration on the structure and properties of LiNi0.8Al0.2−xTixO2 were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and charge-discharge tests, respectively. The results show that the optimal molar fraction of Ti, calcination temperature and time, and additional molar fraction of Li for LiNi0.8Al0.2−xTixO2 cathode materials are 0.1, 700°C, 20 h, and 0.05, respectively. Ti doping facilitates the formation of the α-NaFeO2 layered structure, and ultrasonic vibration improves the electrochemical performance of LiNi0.8Al0.2−xTixO2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Minerals, Metallurgy and Materials - Volume 16, Issue 4, August 2009, Pages 452-457
نویسندگان
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