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
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Structural and electrochemical study of Li-Al-Mn-O-F spinel material for lithium secondary batteries
چکیده انگلیسی
The structural and electrochemical properties of various Li-Al-Mn-O-F spinels were studied. Li[LixAlyMn2−x−y]O4−zFz (x = 0, 0.05, y = 0, 0.1, 0 ≤ z ≤ 0.2) spinels were synthesized by a solid-state reaction method. Fluorine substitution in Li[LixAlyMn2−x−y]O4−zFz led to well-developed crystallization with octahedral morphology. In addition, Li[LixAlyMn2−x−y]O4−zFz 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[AlyMn2−y]O4, or Li[LixAlyMn2−x−y]O4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 146, Issues 1–2, 26 August 2005, Pages 237-240
نویسندگان
, , ,