کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7740585 | 1497993 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface structure and high-rate performance of spinel Li4Ti5O12 coated with N-doped carbon as anode material for lithium-ion batteries
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We have reported a straightforward strategy to fabricate Li4Ti5O12 composites coated with N-doped carbon layer by using NH3 as N source and sugar as C source, which is a benefit for optimizing carbon layer thickness and tuning atomic ratio of N/C. The composite was synthesized by a conventional solid state reaction with ball milled mixture of TiO2, Li2CO3, and sugar as the precursor, then followed by a high temperature annealing in the atmosphere of Ar and NH3. The choice of titanium source has an impact on the Li4Ti5O12 surface morphology as well as electrochemical properties. N-doped TiO2 can lead to the generation of uniform N-doped C-coating layer, resulting in improved electrochemical performances at high current rate. The N-doped C-coating Li4Ti5O12 obtained by using Anatase TiO2 produces a serrated thin carbon layer, showing the best electrochemical behaviors with the discharge capacity of 100 mAh gâ1 at high rate of 24 C and 92.2% of initial capacity after 800 cycles at 12 C, which should be one of the promising anode materials for hybrid electric vehicles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 239, 1 October 2013, Pages 538-545
Journal: Journal of Power Sources - Volume 239, 1 October 2013, Pages 538-545
نویسندگان
Haiquan Zhang, Qijiu Deng, Chengxu Mou, Zongling Huang, Ying Wang, Aijun Zhou, Jingze Li,