کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4907968 | 1426584 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Manganese dioxide/biocarbon composites with superior performance in supercapacitors
ترجمه فارسی عنوان
کامپوزیت دی اکسید منگنز / بیو کربن با عملکرد برتر در ابررایانه ها
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
In this paper, MnO2/allium-giganteum-like biocarbon (KWB) composites (KWBM) have been prepared by a simple method. First, the biocarbon was derived from sugarcane bagasse by one-step carbonization and activation method, and then, MnO2 nanosheets anchored on the surface of biocarbon and the KWBM was obtained. The analysis results demonstrated that chemical composition and microstructure of KWBM were closely related to the mass ratio of KMnO4/KWB, and which further impacted electrochemical performance of KWBM profoundly. Especially, the KWBM-4 (the mass ratio of KMnO4/KWB is 2) exhibited a highest specific capacitance of 402 F gâ 1 at a current density of 1 A gâ 1 in three-electrode system. The asymmetric two-electrode system with outstanding energy density was assembled by employing the KWBM-4 as the positive electrode and the KWB as the negative electrode. The two-electrode system displays a high energy density of 25.9 Wh kgâ 1 at a power density of 750 W kgâ 1 within a potential rage of 0-1.5 V. Furthermore, the system exhibited high cycle stability with only 5.8% loss of its initial capacitance after 2000 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 791, 15 April 2017, Pages 159-166
Journal: Journal of Electroanalytical Chemistry - Volume 791, 15 April 2017, Pages 159-166
نویسندگان
Jiao Chen, Jianhui Qiu, Bin Wang, Huixia Feng, Yanling Yu, Eiichi Sakai,