کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11015748 | 1781703 | 2019 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Zr-doped Li4Ti5O12 anode materials with high specific capacity for lithium-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Zr-doped Li4Ti5O12 anode materials with high specific capacity for lithium-ion batteries Zr-doped Li4Ti5O12 anode materials with high specific capacity for lithium-ion batteries](/preview/png/11015748.png)
چکیده انگلیسی
Zr4+-doped Li4Ti5-xZrxO12 (xâ¯=â¯0, 0.05, 0.10, 0.15, 0.20) anode materials are prepared via a facile hydrothermal method. The as-obtained composites are stacked by the irregular thin nanosheets and show a pure phase structure and good crystallinity. Furthermore, doping Zr ions into Li4Ti5O12 can significantly lower the polarization, enhance the reversibility and facilitate Li+ diffusion of the electrodes. Particularly, the 0.15Zr-LTO sample delivers a fairly high initial discharge capacity of 206.4â¯mAh gâ1 and maintains 188.2, 170.7, 161.5, 149.1â¯mAh gâ1 at 1C, 2C, 5C and 10C rates (1Câ¯=â¯175â¯mAh gâ1), respectively. Even at 20C, it exhibits the initial discharge capacities of 163.7â¯mAh gâ1 and the capacity retention still retains 83% (136.7â¯mAh gâ1) after 500 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 38-45
Journal: Journal of Alloys and Compounds - Volume 774, 5 February 2019, Pages 38-45
نویسندگان
Lina Hou, Xue Qin, Xuejiao Gao, Tirong Guo, Xiang Li, Jia Li,