کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7924328 | 1511976 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of dispersion status with functionalized graphenes for electric double-layer capacitors
ترجمه فارسی عنوان
اثر وضعیت پراکندگی با گرافن های کاربردی برای خازن های دو لایه الکتریکی
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کلمات کلیدی
گرافن کارکردی ظرفیت نگهداری، مقاومت داخلی، مخزن سوپر
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Graphene with oxygen (M-rGO and H-rGO) and nitrogen (N-rGO) related functional groups have been fabricated. Reduced graphenes including H-rGO, M-rGO and N-rGO were mixed with activated carbons as the composite electrodes and characterized for supercapacitors. The effects of the functional groups on graphenes as the conductive additive have been investigated. It was found that a suitable content of functional groups can improve the stability of dispersion, and therefore reduce the internal resistance (IR drop) and charge transfer resistance (Rct) resulting in higher rate capability. The supercapacitor with M-rGO and KS6 as additive at the activated carbon electrode can be operated at a rate as high as 6Â A/g and exhibits a capacitance of 208Â F/g, whereas the supercapacitor using only KS6 as additive shows a capacitance of only 107Â F/g. The graphene contained supercapacitor has been cycled over 2000 times at 4Â A/g with almost no capacitance fading.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 190, December 2014, Pages 59-65
Journal: Materials Science and Engineering: B - Volume 190, December 2014, Pages 59-65
نویسندگان
Y.-R. Chen, K.-F. Chiu, H.C. Lin, C.-Y. Hsieh, C.B. Tsai, B.T.T. Chu,