کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5789182 1414300 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Increased working voltage of hexamine-coated porous carbon for supercapacitors
ترجمه فارسی عنوان
افزایش ولتاژ کار کربن متخلخل هگزامین برای دستگاه های فوق
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی
Highly porous carbon, both unmodified and hexamine-coated on the pore surfaces, is tested at high working voltages in organic electrolyte for supercapacitors in order to enhance the energy density and power density. Sol-gel processing allows for excellent control of the porous structure and chemical composition of carbon, resulting in a material with high surface area and a low level of impurities. This porous carbon can be modified using a simple solution-based method to enhance capacitance. Increasing the working voltage from 2.0 to 3.0 V significantly improves performance for both unmodified and hexamine-coated carbon. The energy density and power density increase at higher working voltage, and under certain conditions, the capacitance increases as well. Cyclic stability is also investigated, with hexamine-coated carbon retaining more of its initial capacitance than unmodified carbon at all working voltages.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science Bulletin - Volume 60, Issue 18, September 2015, Pages 1587-1597
نویسندگان
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