کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1635417 1007024 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of Li[Ni1/3Co1/3Mn1/3]O2 powders for cathode material in secondary battery by solid-state method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Preparation of Li[Ni1/3Co1/3Mn1/3]O2 powders for cathode material in secondary battery by solid-state method
چکیده انگلیسی
Employing Li2CO3, NiO, Co3O4, and MnCO3 powders as starting materials, Li[Ni1/3Co1/3Mn1/3] O2 was synthesized by solid-state reaction method. Various grinding aids were applied during milling in order to optimize the synthesis process. After successive heat treatments at 650 and 950 °C, the prepared powders were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy, and transmission electron microscopy. The powders prepared by adding salt (NaCl) as grinding aid exhibit a clear Rm layer structure. The powders by other grinding aids like heptane show some impurity peaks in the XRD pattern. The former powders show a uniform particle size distribution of less than 1 μm average size while the latter shows a wide distribution ranging from 1 to 10 μm. Energy dispersive X-ray (EDX) analysiss show that the ratio of Ni, Co, and Mn content in the powder is approximately 1/3, 1/3, and 1/3, respecively. The EDX data indicate no incorporation of sodium or chlorine into the powders. Charge-discharge tests gave an initial discharge capacity of 160 mAh·g−1 for the powders with NaCl addition while 70 mAh·g−1 for the powders with heptane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metals - Volume 25, Issue 6, Supplement 2, December 2006, Pages 184-188
نویسندگان
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