کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
189360 459678 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Submicron LiFe1−yMnyPO4 solid solutions prepared by mechanochemically assisted carbothermal reduction: The structure and properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Submicron LiFe1−yMnyPO4 solid solutions prepared by mechanochemically assisted carbothermal reduction: The structure and properties
چکیده انگلیسی

Homogeneous submicron carbon-coated LiFe1−yMnyPO4 solid solutions in the whole concentration range (0 ≤ y ≤ 1) were obtained by mechanochemically assisted carbothermal reduction of Fe2O3 and MnO2, using high-energy planetary mill. The samples were studied through a combination of several techniques: XRD, TEM, FTIR, Mössbauer, 6,7Li and 31P NMR spectroscopy and magnetic measurements. NMR study and magnetic measurements revealed the presence of tiny amounts of structural defects and ferromagnetic-like impurities with a Curie temperature above RT differing upon the sample composition. Electrochemical cycling of as prepared LiFe1−yMnyPO4 showed that, despite high homogeneity and fine particles, noticeable capacity loss is observed with increased Mn content, mainly in the Mn2+/Mn3+ range.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 59, 1 January 2012, Pages 404–411
نویسندگان
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