کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
182684 | 459436 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Significant improvement of high voltage cycling behavior AlF3-coated LiCoO2 cathode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Significant improvement of high voltage cycling behavior AlF3-coated LiCoO2 cathode Significant improvement of high voltage cycling behavior AlF3-coated LiCoO2 cathode](/preview/png/182684.png)
چکیده انگلیسی
To improve the capacity retention of LiCoO2 at 4.5 V cut-off cycling, the AlF3 as new coating material was introduced. The AlF3-coated LiCoO2 showed no large difference in the bulk structure and a uniform AlF3-coating layer whose thickness is of about 10 nm covers LiCoO2 particles, as confirmed by transmission electron microscopy. The AlF3-coated LiCoO2 delivered the similar initial discharge capacity to pristine LiCoO2 to 4.5 V versus Li. Surprisingly, the capacity retention and rate capability were greatly enhanced comparing to the pristine LiCoO2. Ac-impedance results showed that the AlF3-coated LiCoO2 has stable charge transfer resistance (Rct) on cycling. Reduced Co dissolution was also seen for the AlF3-coated LiCoO2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 8, Issue 5, May 2006, Pages 821–826
Journal: Electrochemistry Communications - Volume 8, Issue 5, May 2006, Pages 821–826
نویسندگان
Y.-K. Sun, J.-M. Han, S.-T. Myung, S.-W. Lee, K. Amine,