کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11006462 | 1503512 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Facile preparation of nitrogen-doped high-surface-area porous carbon derived from sucrose for high performance supercapacitors
ترجمه فارسی عنوان
تهیه چسب کربن متخلخل با سطح نیتروژنی ناشی از ساکارز برای سازندهای با عملکرد بالا
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کلمات کلیدی
ساکارز، کربن متخلخل تهیه چاقو، ابرخازنها،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
We propose a simple strategy that combines polymerization with chemical activation to prepare a new high-surface-area nitrogen-doped porous carbon (SU-NPC) using sucrose as a carbon precursor, urea as a nitrogen precursor and KOH as an activation reagent. Additionally, this method avoids the time-consuming and complex hydrothermal treatment and template method of traditional approaches. To further optimize the performance, we investigated the relationship between the structure of the SU-NPC-X (X is the activation temperature) and its electrochemical performance at different activation temperatures in detail. The as-prepared SU-NPC-750 not only featured a large specific surface area of 1751â¯m2â¯gâ1 with a microporous network but also possessed a 5.96% nitrogen content. In 6â¯M KOH, the SU-NPC-750 displayed the highest specific capacitance of 335Fâ¯gâ1 at 1â¯A gâ1 among all previously reported sucrose-derived porous carbon. Meanwhile, the SU-NPC-750 presents an outstanding rate performance with a 65% capacitance retention at 30â¯A gâ1 and an excellent cycling stability with an approximately 95.5% capacitance retention over 10,000 cycles. Moreover, the as-assembled symmetrical capacitor showed a high energy density of 14.1â¯Whâ¯kgâ1. Therefore, the porous carbon materials described in this study are promising candidate electrode materials for supercapacitors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 462, 31 December 2018, Pages 444-452
Journal: Applied Surface Science - Volume 462, 31 December 2018, Pages 444-452
نویسندگان
Jiangqi Zhou, Min Wang, Xin Li,