کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10131128 | 1645538 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Graphene / V2O5 hybrid electrode for an asymmetric supercapacitor with high energy density in an organic electrolyte
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Graphene / V2O5 hybrid electrode for an asymmetric supercapacitor with high energy density in an organic electrolyte Graphene / V2O5 hybrid electrode for an asymmetric supercapacitor with high energy density in an organic electrolyte](/preview/png/10131128.png)
چکیده انگلیسی
A novel rGO/V2O5 hybrid aerogel composite made up of vanadium pentoxide nanospheres embedded in graphene sheets was synthesized by an easy hydrothermal method. V2O5 with a loading of only 12â¯wt% in composite played a significant pseudocapacitance role. To obtain better material, an annealing process in a tube furnace was used. The final rGO/V2O5 electrode showed excellent electrochemical performance, achieving a specific capacitance of 384â¯Fâ¯g-1â¯at 0.1â¯Aâ¯gâ1 and of 197â¯Fâ¯g-1â¯at 2â¯Aâ¯gâ1. The rGO/V2O5 functioned as the anode and graphene functioned as the cathode in an asymmetric supercapacitor used in an organic electrolyte resulted in a wide potential operating window of 2.5â¯V and delivered a maximum energy density of 80.4â¯Wh kgâ1 (275â¯Wâ¯kgâ1) at 0.2â¯Aâ¯gâ1. In addition, the device possessed acceptable cyclic stability, with only 17.8% loss after 10000 cycles at 2â¯Aâ¯gâ1. All of these outstanding properties could make the electrode material prepared in this study a promising application material for supercapacitors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 287, 10 October 2018, Pages 149-157
Journal: Electrochimica Acta - Volume 287, 10 October 2018, Pages 149-157
نویسندگان
Zhangming Liu, Haiyan Zhang, Qiao Yang, Yaowu Chen,