کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7740384 | 1497989 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of thermal history on the electrochemical properties of Li[Ni0.5Mn1.5]O4
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Influence of thermal history on the electrochemical properties of Li[Ni0.5Mn1.5]O4 Influence of thermal history on the electrochemical properties of Li[Ni0.5Mn1.5]O4](/preview/png/7740384.png)
چکیده انگلیسی
The oxygen-stoichiometric spinel Li[Ni0.5Mn1.5]O4 is an insulator with ordered Ni(II) and Mn(IV). Although it delivers 4.7 V versus Li, the ordered phase gives poor performance as the cathode of a Li-ion battery. Here we demonstrate control of the degree of cation order by adjusting the oxygen stoichiometry with thermal history of the synthesis rather than by doping 2M(III) for Ni(II) + Mn(IV) (M = Cr, Mn, Fe, Co, Al, Ga). We report retention of capacity near 100 mAh gâ1 at room temperature at 10C/10C charge/discharge rate with little capacity fade; at 55 °C, a capacity fade occurs as a result of reaction with the electrolyte, but it is reduced to a level comparable to that obtained by doping.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 243, 1 December 2013, Pages 260-266
Journal: Journal of Power Sources - Volume 243, 1 December 2013, Pages 260-266
نویسندگان
Guoqiang Liu, Kyu-Sung Park, Jie Song, John B. Goodenough,