کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7733670 | 1497953 | 2015 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A facile and novel organic coprecipitation strategy to prepare layered cathode material Li[Li0.2Mn0.54Ni0.13Co0.13]O2 with high capacity and excellent cycling stability
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
The lithium-rich layered cathode material Li[Li0.2Mn0.54Ni0.13Co0.13]O2 with high capacity and excellent cycling stability, is successfully synthesized through a facile organic co-precipitation route. The as-obtained material exhibits a well-crystallization and uniform size distribution, above which have been characterized and observed by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Moreover, FT-IR spectra proves that the addition of metal ions Mn+ induces a red-shift of the bond of C-N groups of the 8-hydroxyquinoline, which is used as the precipitant in this work, and most probably due to the strong complexation effect of metal ions Mn+ with N and O atoms of 8-hydroxyquinoline, and simultaneously the co-precipitation process occurred. The electrochemical results reveal that the cathode material derived from this novel organic co-precipitation route exhibits improved electrochemical performance, of which could provide an initial discharge capacity of 287.2 mAhgâ1at 0.2C within a potential range of 2.0-4.8 V at room temperature, even at high C-rate of 2C, this material could also deliver a capacity of 212.1 mAh gâ1 with 97.7% capacity retention after 100 cycles. Therefore, it is proposed that this organic co-precipitation might be a high-efficiency strategy to synthesize alternative electrode materials with improved performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 279, 1 April 2015, Pages 157-164
Journal: Journal of Power Sources - Volume 279, 1 April 2015, Pages 157-164
نویسندگان
Xiaolei Yuan, Qun-jie Xu, Cong Wang, Xinnuan Liu, Haimei Liu, Yongyao Xia,