کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6601986 1424074 2018 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of polypyrrole/nickel hydroxide/sulfonated graphene oxide ternary composite for all-solid-state asymmetric supercapacitor
ترجمه فارسی عنوان
سنتز و مشخصه ترکیب کامپوزیت سه تایی گرافن پلی اتیلن / هیدروکسید نیکل / سولفونیک برای ابررسانای نامتقارن جامد حالت جامد
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
The polypyrrole/nickel hydroxide/sulfonated graphene oxide (PPy/Ni(OH)2/SGO) ternary composite is prepared as supercapacitor electrode material by stepwise loading of Ni(OH)2 and PPy into SGO through hydrothermal and chemical oxidative polymerization process. The PPy and Ni(OH)2 are incorporated into composite to act as pseudocapacitive electrode with low cost and high capacitance. The SGO obtained by the surface modification of graphene has a higher hydrophilic property and larger specific surface to provide charge transfer path. The creative PPy/Ni(OH)2/SGO (P-N-S) ternary composite shows a high specific capacitance of 1632.5 F g−1 at a current density of 1 A g−1 in 6 M KOH solution. A capacitance retention of 86% after 1000 cycles proves that the P-N-S has a good cycling stability. The all-solid-state asymmetric supercapacitor (ASC) is assembled with P-N-S cathode material and activated carbon (AC) as anode material to exhibit a high special capacitance of 224 F g−1 at 1 A g−1, a large energy density (79.6 Wh Kg−1) and power density (0.8 kW kg−1), and a stable cycle life (the capacitance retention rate of 60% after 5000 cycles at 10 A g−1). Two ASCs in series can lighten up a green LED indicator.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 283, 1 September 2018, Pages 467-477
نویسندگان
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