کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4908118 | 1426588 | 2017 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Three-dimensional nitrogen-doped graphene derived from poly-o-phenylenediamine for high-performance supercapacitors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
We report here that poly-o-phenylenediamine as a solid carbon source can be facilely carbonized to produce three-dimensional nitrogen-doped graphene (3DNGN) with the aid of Ni(NO3)2 powder. In situ formed Ni nanoparticles by decomposition of Ni(NO3)2 serve as both template and catalyst for the formation of 3DNGN. The 3DNGN with interconnected porous structure and high content of nitrogen doping can ensure large electrolyte-accessible surface area, rapid ion transportation, and fast electron transport, resulting in high electrochemical performance. The 3DNGN shows a high specific capacitance of 312 F gâ 1 at 1 A gâ 1 with good capacitance retention capability and good cycling stability, and outputs a high average energy power density of 10.8 W h kgâ 1 and a high maximum power density of 595 kW kgâ 1 in aqueous KOH electrolyte. Due to the great pseudocapacitance in aqueous H2SO4 electrolyte, the specific capacitance of the 3DNGN can reach a high value of 345 F gâ 1 at 1 A gâ 1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 787, 15 February 2017, Pages 103-109
Journal: Journal of Electroanalytical Chemistry - Volume 787, 15 February 2017, Pages 103-109
نویسندگان
Wenfang Deng, Youming Zhang, Yueming Tan, Ming Ma,