کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760324 | 1498046 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of LiNi0.8Co0.2O2-based cathode materials for lithium batteries by a co-precipitation method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
LiNi0.8Co0.2âxAlxO2 (0 â¤Â x â¤Â 0.1) cathode powders were prepared with a novel co-precipitation method followed by heat-treating at temperatures between 500 and 900 °C. The electrochemical properties as cathode material for lithium batteries were predicted with XRD patterns and examined with capacity retention studies. Among the prepared samples, 800 °C heat-treated un-substituted LiNi0.8Co0.2O2 sample showed the best cycling performance. However, the initial specific discharge capacity decreases with increase amount of Al-substitution for the LiNi0.8Co0.2âxAlxO2 powders prepared with the same process. It may due to the increase in the amount of electrochemical inactive Al3+ and the increase in the hindrance of Li+ ions diffusion by increasing Al3+ occupancy of interstitial tetrahedral 6c sites in the Al-substituted cathode materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 146, Issues 1â2, 26 August 2005, Pages 270-274
Journal: Journal of Power Sources - Volume 146, Issues 1â2, 26 August 2005, Pages 270-274
نویسندگان
She-huang Wu, Chi Wei Yang,