کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4766844 | 1424114 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of Mg2TiO4-coated LiCoO2 as a cathode material for lithium ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
A series of Mg-doped LiCoO2 cathode materials are prepared by a solid-state reaction with a titanate coating for use in lithium ion batteries. The detailed structures of the materials are thoroughly characterized by experimental techniques including scanning electron microscopy, transmission electron microscopy, X-ray diffraction, electron energy loss spectroscopy, and electron probe microanalysis. The coating layer, which is characterized as a spinel phase of Mg2TiO4, plays the important role of a protective layer to prevent detrimental side reactions. Hence, the coated materials exhibit much improved cycling ability, excellent C-rate capability, and high upper cut-off voltages owing to the Mg doping. Mg ions in the coating layer are relocated from the bulk region of the active material and have a beneficial effect that enhances battery performance. This work provides an informative guide for the development of novel high-voltage cathode materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 243, 20 July 2017, Pages 162-169
Journal: Electrochimica Acta - Volume 243, 20 July 2017, Pages 162-169
نویسندگان
Jae-Hyun Shim, Nam-Hee Cho, Sanghun Lee,