کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7849865 | 1508845 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A modified molten-salt method to prepare graphene electrode with high capacitance and low self-discharge rate
ترجمه فارسی عنوان
یک روش مولد اصلاح شده برای تهیه الکترود گرافن با ظرفیت بالا و کم خود تخلیه
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
Graphene is known to suffer from severe aggregation and incomplete recovery of a Ï-Ï conjugated system during the reduction process from graphene oxide. Here we report that these issues can be addressed by using a modified molten salt system. The advantages of the molten salt for reducing graphene show in three aspects: (i) prevent restacking; (ii) restore the conjugated network; (iii) serve as reaction medium for KNO3 activation and nitrogen doping. The molten-salt method-derived graphene (MNG) displays a highly sp2-hybrid constitution, nitrogen doping and hierarchically porous structure. With this design, the MNG-based supercapacitor manifests outstanding specific capacitance (234Â FÂ gâ1 and 130Â FÂ gâ1 in 6Â M KOH and EMIMBF4 electrolyte, respectively), high power density, combined with excellent cycling stability and low self-discharge rate. The facile and scalable features of this strategy will be helpful for the rational design of functionalized graphene-based materials for diverse applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 102, June 2016, Pages 255-261
Journal: Carbon - Volume 102, June 2016, Pages 255-261
نویسندگان
Jie Wang, Bing Ding, Xiaodong Hao, Yunling Xu, Ya Wang, Laifa Shen, Hui Dou, Xiaogang Zhang,