کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6661783 | 1426557 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and electrochemical characterizations of LiMn2O4 prepared by high temperature ball milling combustion method with citric acid as fuel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
LiMn2O4 cathode material was prepared by high temperature ball milling combustion using lithium acetate, manganese (II) acetate tetrahydrate as raw materials and citric acid as fuel. The effects of milling temperature improving the electrochemical performance of LiMn2O4 were investigated. X-ray diffraction, scanning electron microscopy, galvanostatic testing, electrochemical impedance spectroscopy and cyclic voltammetry were used to analyze the as-prepared materials in this work. The experimental results showed that the best electrochemical performance of LiMn2O4 was obtained with material synthesized at 600â¯Â°C. The initial discharge capacities were 132, 121, 109, 93, 76 and 58â¯mAhâ¯gâ1 at rates of 0.1, 0.5, 1.0 C, 2.0, 5.0 and 10 C, respectively. Moreover, after 50â¯cycles, at a rate of 0.1 C, the capacity of LiMn2O4 sample was 125â¯mAhâ¯gâ1, and its capacity retention rate achieved 94.7%. It is concluded that this novel synthesis method is a promising method for preparation of LiMn2O4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 818, 1 June 2018, Pages 204-209
Journal: Journal of Electroanalytical Chemistry - Volume 818, 1 June 2018, Pages 204-209
نویسندگان
Xuetian Li, Zhongbao Shao, Kuiren Liu, Guangfu Liu, Binshi Xu,