کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1251097 | 970885 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impedance Studies of Spinel LiMn2O4 Electrode/electrolyte Interfaces
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The formation process of solid electrolyte interphase(SEI) film on spinel LiMn2O4 electrode surface was studied by electrochemical impedance spectroscopy(EIS) during the initial storage in 1 mol/L LiPF6-EC:DMC:DEC electrolyte and in the subsequent first charge-discharge cycle. It has been demonstrated that the SEI film thickness increased with the increase of storage time and spontaneous reactions occurring between spinel LiMn2O4 electrode and electrolyte can be prevented by the SEI film. In the first charge-discharge cycle succeeding the storage, the electrolyte oxidation coupled with Li-ion insertion is evidenced as the main origin to increase the resistance of SEI film. The results also confirm that the variations of the charge transfer resistance(Rct) with the electrode potential(E) can be well described using a classical equation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Research in Chinese Universities - Volume 24, Issue 4, July 2008, Pages 511-515
Journal: Chemical Research in Chinese Universities - Volume 24, Issue 4, July 2008, Pages 511-515
نویسندگان
Quan-chao ZHUANG, Xiao-yong FAN, Jin-mei XU, Guo-zhen WEI, Quan-feng DONG, Shi-gang SUN,