کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7737795 1497980 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sulfurized activated carbon for high energy density supercapacitors
ترجمه فارسی عنوان
کربن فعال سولفوریزاسیون برای ابررساناها با تراکم انرژی بالا
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Sulfurized activated carbon (SAC), made by coating the pore surface with thiophenic sulfur functional groups from the pyrolysis of sulfur flakes, were characterized and tested for supercapacitor applications. From X-ray photoelectron spectroscopy (XPS), the sulfur content in the SAC was found to be 2.7 at%. Electrochemical properties from potentiostatic and galvanostatic measurements, and electrochemical impedance spectroscopy (EIS) were used to evaluate the effect of sulfur on porous carbon electrodes. The SAC electrode exhibits better conductivity, and an obvious increase in specific capacitance that is almost 40% higher than plain activated carbons (ACs) electrode at a high current density of 1.4 A g−1. The proposed mechanism for improved conductivity and capacitive performance due to the sulfur functional groups on ACs will be discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 252, 15 April 2014, Pages 90-97
نویسندگان
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