کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1285201 | 973124 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved high-rate charge/discharge performances of LiFePO4/C via V-doping
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
V-doped LiFePO4/C cathode materials were prepared through a carbothermal reduction route. The microstructure was characterized by X-ray diffraction, X-ray photoelectron spectroscopy and scanning electron microscopy. The electrochemical Li+ intercalation performances of V-doped LiFePO4/C were compared with those of undoped one through galvanostatic intermittent titration technique, cyclic voltamperometry, and electrochemical impedance spectrum. V-doped LiFePO4/C showed a high discharge capacity of ∼70 mAh g−1 at the rate of 20 C (3400 mA g−1) at room temperature. The significantly improved high-rate charge/discharge capacity is attributed to the increase of Li+ ion “effective” diffusion capability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 193, Issue 2, 5 September 2009, Pages 841–845
Journal: Journal of Power Sources - Volume 193, Issue 2, 5 September 2009, Pages 841–845
نویسندگان
C.S. Sun, Z. Zhou, Z.G. Xu, D.G. Wang, J.P. Wei, X.K. Bian, J. Yan,