کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5149017 | 1497872 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrocapacitive properties of nitrogen-containing porous carbon derived from cellulose
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electrocapacitive properties of nitrogen-containing porous carbon derived from cellulose Electrocapacitive properties of nitrogen-containing porous carbon derived from cellulose](/preview/png/5149017.png)
چکیده انگلیسی
A generalised approach to the preparation of nitrogen-containing porous carbon from cellulose for supercapacitor applications is demonstrated in this paper. A sample prepared at a carbonisation temperature of 600 °C with a specific surface area of 781 m2 gâ1 and a pore volume of 0.68 cm3 gâ1 displayed the best electrocapacitive performance. The well-developed porous structure coupled with the presence of nitrogen-containing functional groups along with nascent hydrogen enabled this sample to exhibit specific capacitances of 248 and 133 F gâ1 at current densities of 0.1 and 10 A gâ1, respectively, in a symmetric cell with 1 M aqueous H2SO4 solution as the electrolyte. With this electrode, about 89% of the initial capacitance is retained after 2000 cycles at a current density of 1 A gâ1. A symmetric supercapacitor fabricated using this carbon in both electrodes exhibits an energy density of 14.6 Wh Kgâ1 at a power density of 63.5 W Kgâ1 and remains at 7.9 Wh Kgâ1 at a power density of 6500 W Kgâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 360, 31 August 2017, Pages 634-641
Journal: Journal of Power Sources - Volume 360, 31 August 2017, Pages 634-641
نویسندگان
Hao Lu, Xiaoming Sun, Rohit R. Gaddam, Nanjundan A. Kumar, Xiu Song Zhao,