کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4985632 | 1454761 | 2017 | 36 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Porous petal-like Ni(OH)2âMnOx nanosheet electrodes grown on carbon fiber paper for supercapacitors
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
Petal-like Ni(OH)2âMnOx nanosheets were fabricated by electrochemical cathodic co-deposition on carbon fiber paper from Mn2+/Ni2+ solutions. For the nanosheet electrode incorporating 25% nickel, the specific capacitance of 344 F gâ1 at a current density of 0.5 A gâ1 with a cycling stability of 92.5% after 10,000 cycles was obtained in 0.5 M Na2SO4 electrolyte. A symmetric supercapacitor device assembled from this as-fabricated electrode demonstrated the energy density of 17.36 Wh kgâ1 at the power density of 249 W kgâ1 and 1.8 Wh kgâ1 at 5.01 kW kgâ1, respectively. It showed an excellent cycling stability with a loss of only 3.3% after 10,000 cycles at the current density of 5 A gâ1. These remarkable electrochemical performances are attributed to that the nickel enhanced the robustness of the porous structure and the conductivity of the pristine MnOx, which facilitates the charge transfer and ion diffusion during the long time cycling. Our results suggest a great potential in developing energy storage devices from manganese oxide based electrodes by incorporating nickel in the lattice.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surfaces and Interfaces - Volume 8, September 2017, Pages 73-82
Journal: Surfaces and Interfaces - Volume 8, September 2017, Pages 73-82
نویسندگان
Zeng Zifan, Sun Ping, Zhu Jiliang, Zhu Xiaohong,