کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6664083 | 1427043 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Porous carbon with interpenetrating framework from Osmanthus flower as electrode materials for high-performance supercapacitor
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Series of porous carbons are prepared from Osmanthus flower by simple hydrothermal carbonization followed by KOH activation. The structure and morphology of the as-prepared Osmanthus flower-derived porous carbon materials (OC) were investigated by X-ray diffraction, Raman spectrum, N2 adsorption/desorption isotherm and electron microscopy, respectively. The results indicate that the OC are mainly microporous with 3D interpenetrating framework, and the pore-structure of the OC is associated with the dosage of KOH. As electrode material for supercapacitors, the electrochemical measurements showed that the OC-2 (the weight ratio of KOH/biochar is 2) exhibited better electrochemical performance than other OC samples and reported porous carbon materials, which is mainly due to the higher micropore surface/volume and the interpenetrating framework in the texture of the OC-2. Furthermore, a symmetric supercapacitor assembled by OC-2 can delivered a high energy density of 7.95 W h kgâ1 with a power density of 10 kW kgâ1 at 20 A gâ1, and an excellent cycling stability (a high capacitance retention of 92.9% after 10,000 cycles). The impressive electrochemical performances of OC-2 electrodes demonstrated that the fully utilization of cheap resource acquisition endowed by nature is a good avenue to design and fabricate materials with great promising applications as high-performance energy storage system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 6, Issue 1, February 2018, Pages 258-265
Journal: Journal of Environmental Chemical Engineering - Volume 6, Issue 1, February 2018, Pages 258-265
نویسندگان
Ren Zou, Hongying Quan, Wenxiu Wang, Weimin Gao, Yinghu Dong, Dezhi Chen,