کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760276 | 1498046 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Antifluorite compounds, Li5+xFe1âxCoxO4, as a lithium intercalation host
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Antifluorite compounds, Li5+xFe1âxCoxO4, as a lithium intercalation host Antifluorite compounds, Li5+xFe1âxCoxO4, as a lithium intercalation host](/preview/png/9760276.png)
چکیده انگلیسی
Antifluorite-type materials, Li5+xFe1âxCoxO4, were prepared and studied as a cathode for use in a lithium secondary battery. During the first charge process, the structure undergoes a phase change as the removal of lithium progresses. The original antifluorite structure is almost completely lost when 1.5 equivalents of lithium are deintercalated from the structure, as in the case of Li5FeO4. This tendency was less obvious in cobalt-doped samples, and 2.1 equivalents of lithium could be removed before the original lattice disappeared. Cobalt doping helps to maintain the original lattice configuration and enhances cycling stability. The Mössbauer spectra suggest that the electrons of oxygen atoms play a role in addition to those of iron. A 1.3 equivalents of lithium could be reversibly deintercalated from Li5.6Fe0.4Co0.6O4, which corresponds to 220 mAh gâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 146, Issues 1â2, 26 August 2005, Pages 21-26
Journal: Journal of Power Sources - Volume 146, Issues 1â2, 26 August 2005, Pages 21-26
نویسندگان
N. Imanishi, Y. Inoue, A. Hirano, M. Ueda, Y. Takeda, H. Sakaebe, M. Tabuchi,