کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8959822 | 1646360 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Construction of manganese-cobalt-sulfide anchored onto rGO/Ni foam with a high capacity for hybrid supercapacitors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Ternary metal sulfides such as manganese-cobalt-sulfide (MCS) with the unique physical, chemical properties and high specific capacity can be used as energy storage material for supercapacitor. Herein, we prepared a MCS nanosheet array stick onto reduced graphene oxide (rGO)/Ni foam (MCS/rGO/NF) by a carefully controlled sulfurization time process. As the reaction time increased, the thickness of MCS/rGO/NF nanosheet arrays charged from thin to thick. After 3â¯h of sulfurization reaction (MCS/rGO/NF-3h), the nanosheets became rough due to the formation of some small sheets, and the composite showed the best electrochemical performance. The MCS/rGO/NF-3h composite exhibited a large specific capacity of 1356â¯Câ¯gâ1â¯at a current density of 1â¯Aâ¯gâ1, and a long-term cyclic stability of 92.9% at a current density of 10â¯Aâ¯gâ1 through 3000 cycles. Moreover, a hybrid supercapacitor (HSC) device was assembled using MCS/rGO/NF-3h and rGO as the positive and negative electrodes, respectively. The MCS/rGO/NF-3h//rGO HSC exhibited a high energy density of 45.4â¯Wâ¯hâ¯kgâ1â¯at a power density of 850.2â¯Wâ¯kgâ1. The prominent electrochemical performance suggests that MCS/rGO/NF composites are promising electrode materials for energy storage applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 288, 20 October 2018, Pages 31-41
Journal: Electrochimica Acta - Volume 288, 20 October 2018, Pages 31-41
نویسندگان
Xiaokun Han, Haicheng Xuan, Jinhong Gao, Ting Liang, Jing Yang, Yuekui Xu, Peide Han, Youwei Du,