کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5488934 | 1399591 | 2017 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of post-calcination and mechanical pulverization on the electrochemical properties of nano-sized Li4Ti5O12 for hybrid capacitors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of post-calcination and mechanical pulverization on the electrochemical properties of nano-sized Li4Ti5O12 for hybrid capacitors Effects of post-calcination and mechanical pulverization on the electrochemical properties of nano-sized Li4Ti5O12 for hybrid capacitors](/preview/png/5488934.png)
چکیده انگلیسی
Great efforts have been devoted for the synthesis of Li4Ti5O12 nanoparticles as anode material, because particle size less than 100 nm is the main factor for achieving a high rate capability. In this study, we fabricated nano-sized Li4Ti5O12 by high-energy milling operated at 3500 rpm, that it was treated afterwards by post-calcination to improve its pulverized crystallinity. Post-calcination at moderate temperature is found to be effective for improving the electrochemical properties of Li4Ti5O12 prepared by mechanical pulverization. Finally, a 100 nm-sized Li4Ti5O12 was successfully obtained by optimizing the high-energy milling passing 10 times in chamber and setting post-calcination to 700 °C. The specific capacity significantly depended on the crystallinity of Li4Ti5O12 after treated by the post-calcination. The 100 nm-sized Li4Ti5O12 showed high-rate capability and good capacity retention of 99.9% after 1500 cycles. It can be explained by the synergistic effect of reduced particle size and improved crystallinity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 17, Issue 2, February 2017, Pages 121-125
Journal: Current Applied Physics - Volume 17, Issue 2, February 2017, Pages 121-125
نویسندگان
Byung-Gwan Lee, Hyo-Jin Ahn, Jung-Rag Yoon,