کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10640040 | 995866 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of solid-state synthesized pure and doped lithium nickel cobalt oxides
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effects of solid-state synthesized pure, anion F-doped and cation Mg-doped lithium nickel cobalt oxide were studied on their electrochemical impedance spectroscopy (EIS), lithium-ion diffusion, cyclability and Fourier transform infrared (FTIR). Their chemical diffusion coefficients are in the same order, 10â11Â cm2/s, and decrease with increasing state of charge. The cyclabilities of doped materials are somewhat better. The EIS results show charge transfer resistance increases with cycling; however, the resistance of solid-electrolyte interface (SEI) is random, and it could be the periodical deterioration and reformation process on SEI. Different functional groups are found on the cathode materials through FTIR investigation after cycling tests, and their patterns are almost the same.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 121, Issue 3, 15 August 2005, Pages 248-254
Journal: Materials Science and Engineering: B - Volume 121, Issue 3, 15 August 2005, Pages 248-254
نویسندگان
Y.D. Zhong, X.B. Zhao, G.S. Cao,