کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624426 | 989589 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of AlF3 modification on the physicochemical and electrochemical properties of Li-rich layered oxide
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Lithium (Li)-rich layered oxides are considered promising cathode materials for Li-ion batteries because of their favorable properties. Here, we report our recent finding in the novel oxide, aluminum fluoride (AlF3)-modified Li1.2Mn0.54Ni0.13Co0.13O2 (LMNCAF), which was synthesized via a facile, cost-effective and readily scalable solid-state reaction. LMNCAF possess an F and Al co-doped core structure with a LiF nano-coating on its surface which leads to considerably enhancement in the electrochemical performance of the oxide. The initial discharge capacity (at 0.05 C) increased from 212 mA h gâ1 for Li1.2Mn0.54Ni0.13Co0.13O2 to 291 mA h gâ1 for LMNCAF. A much higher discharge capacity of 211 mA h gâ1 was obtained for LMNCAF after 99 charge/discharge cycles at 0.2 C compared with that of Li1.2Mn0.54Ni0.13Co0.13O2 (160 mA h gâ1). Our preliminary results suggest that AlF3 modification is an effective strategy to tailor the physicochemical and electrochemical properties of Li-rich layered oxides.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 4, March 2016, Pages 5397-5402
Journal: Ceramics International - Volume 42, Issue 4, March 2016, Pages 5397-5402
نویسندگان
Shengli Pang, Yonggang Wang, Tao Chen, Xiangqian Shen, Xiaoming Xi, Daqian Liao,