کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1648252 | 1007553 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Suppressing Li3PO4 impurity formation in LiFePO4/Fe2P by a nonstoichiometry synthesis and its effect on electrochemical properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Lithium iron phosphate (LiFePO4) was synthesized by a solid-state reaction from a nonstoichiometric mixture of starting materials with an iron: phosphorus excess ratio of 2:1 at a high temperature. The nonstoichiometry synthesis did not affect conductive Fe2P formation, lattice constants of LiFePO4 and materials morphology, but could effectively suppress insulating Li3PO4 impurity formation which was clearly observed in the stoichiometric sample. Our results demonstrate that the positive effect of the conductive Fe2P could be masked by the insulating Li3PO4 impurity presence, and the creation of Fe2P without Li3PO4 formation from carbothermal reduction could be successfully achieved by our nonstoichiometry synthesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 65, Issue 9, 15 May 2011, Pages 1323–1326
Journal: Materials Letters - Volume 65, Issue 9, 15 May 2011, Pages 1323–1326
نویسندگان
Chenglin Hu, Huihua Yi, Haisheng Fang, Bin Yang, Yaochun Yao, Wenhui Ma, Yongnian Dai,