کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7736216 1497963 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Additive effect of ionic liquids on the electrochemical property of a sulfur composite electrode for all-solid-state lithium-sulfur battery
ترجمه فارسی عنوان
اثر افزودنی مایعات یونی بر خواص الکتروشیمیایی الکترودهای ترکیبی گوگرد برای باتری لیتیوم-گوگرد با حالت جامد حالت
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
We investigated additive effect of five kinds of ionic liquids, such as 1-ethyl-3-methyl-imidazolium bis(trifluoromethane-sulfonyl)imide [EMI][TFSI], 1-ethyl-3-methyl-imidazolium tetrafluoroborate [EMI][BF4], 1-buthyl-3-methyl-imidazolium bis(trifluoromethane- sulfonyl) imide [BMI][TFSI], 1-buthyl-3-methyl-imidazolium tetrafluoroborate [BMI][BF4], and/or 1-buthyl-3-methyl-imidazolium iodide [BMI][I], on electrochemical properties of the sulfur composite electrode for all-solid-state lithium-sulfur batteries. The sulfur composite electrode that was composed of sulfur (29.9 wt%), vapor-grown carbon fiber (VGCF, 9.9 wt%), solid electrolyte (amorphous Li3PS4, 60.0 wt%), and [EMI][TFSI] (0.2 wt%) showed high initial specific capacity of 1270 mAh g−1 at 25 °C, which was calculated on the base of the weight of sulfur. To construct a laboratory-scale all-solid-state battery, amorphous Li3PS4 and meta-stable Li4.4Si alloy were used as solid electrolyte and as negative electrode materials, respectively. The laboratory-scale all-solid-state battery showed good discharge-charge cycle performance under a constant current density of 0.1 mA cm−2 (24 mA g−1) at room temperature and retained the large specific capacity more than 1230 mAh g−1 even after 50 cycles at 25 °C. The capacity after 50 cycles was about 97% of the initial capacity of the test cell.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 269, 10 December 2014, Pages 727-734
نویسندگان
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