کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760317 | 1498046 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural and electrochemical study of Li-Al-Mn-O-F spinel material for lithium secondary batteries
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The structural and electrochemical properties of various Li-Al-Mn-O-F spinels were studied. Li[LixAlyMn2âxây]O4âzFz (x = 0, 0.05, y = 0, 0.1, 0 â¤Â z â¤Â 0.2) spinels were synthesized by a solid-state reaction method. Fluorine substitution in Li[LixAlyMn2âxây]O4âzFz led to well-developed crystallization with octahedral morphology. In addition, Li[LixAlyMn2âxây]O4âzFz showed superior cycling performance and better thermal stability than LiMn2O4 and LiAl0.1Mn1.9O4. Fluorine substitution also suppressed Mn dissolution which led to stable cycling performance at 55 °C. The differential scanning calorimetry (DSC) results showed that the anion (F for O) and cation (Li, Al for Mn) substituted spinel had better thermal stability than LiMn2O4, Li[AlyMn2ây]O4, or Li[LixAlyMn2âxây]O4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 146, Issues 1â2, 26 August 2005, Pages 237-240
Journal: Journal of Power Sources - Volume 146, Issues 1â2, 26 August 2005, Pages 237-240
نویسندگان
Y.-J. Kang, J.-H. Kim, Y.-K. Sun,