کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1298854 1498390 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of ultrasonic irradiation on the structure and electrochemical properties of cathode material LiNi0.5Mn0.5O2 for lithium batteries
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Effect of ultrasonic irradiation on the structure and electrochemical properties of cathode material LiNi0.5Mn0.5O2 for lithium batteries
چکیده انگلیسی

Substituting mechanical stirring by ultrasonic irradiation in co-precipitation method, cathode material LiNi0.5Mn0.5O2 for lithium batteries with better layered structure and crystallinity has been successfully synthesized. The physicochemical and electrochemical properties of ultrasonic co-precipitation (UCP) prepared material were compared with those of the mechanical stirring co-precipitation (MSCP) prepared material by thermogravimetery analysis (TGA), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), cyclic voltammetry (CV), and galvanostatic charge–discharge testing in detail. UCP prepared LiNi0.5Mn0.5O2 presents better rate discharge capability, cyclic stability and reversibility, resulting from smaller electrochemical polarization during electrode reaction and easier lithium ion insertion/desertion. Application of ultrasonic irradiation during the co-precipitation preparation process is beneficial to produce samples with better physicochemical and electrochemical properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 178, Issues 19–20, 15 July 2007, Pages 1230–1234
نویسندگان
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