کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1285125 973119 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal instability of Olivine-type LiMnPO4 cathodes
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Thermal instability of Olivine-type LiMnPO4 cathodes
چکیده انگلیسی

The remarkable thermal stability of LiFePO4 and its charged counterpart, FePO4, have been instrumental in its commercialization as a lithium-ion battery cathode material. Despite the similarity in composition and structure, and despite the high thermal stability of the parent compound, LiMnPO4, we find that the delithiated phase LiyMnPO4 (which contains a small amount of residual lithium), is relatively unstable and reactive toward a lithium-ion electrolyte. The onset temperature for heat evolution in the presence of 1 M LiPF6 in 1:1 ethylene carbonate/propylene carbonate is around 150 °C, and the total evolved heat is 884 J g−1, comparable to that produced under similar conditions by charged LiCoO2 electrodes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 195, Issue 4, 15 February 2010, Pages 1221–1224
نویسندگان
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