کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6613205 | 459595 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High performance super-capacitive behaviour of deposited manganese oxide/nickel oxide binary electrode system
ترجمه فارسی عنوان
عملکرد فوق العاده خازنی عملکرد الکترود دودویی اکسید منگنز / اکسید منگنز ذخیره شده
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The chrono-potentiometry technique was used to deposit MnO2-NiO binary metal oxide film on a stainless steel substrate at room temperature. During the electrodeposition process, the concentration of nickel acetate is varied in the fixed 0.01Â M manganese acetate solution. The products were characterised by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and field emission scanning electron microscopy (FESEM). Their capacitive behaviour was studied by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy in two different alkaline electrolytes using a three electrode set-up. The MnO2-NiO binary metal oxide electrode deposited from Ni(CH3COO)2.4H2O:Mn(CH3COO)2.4H2O at a molar ratio of 0.25:0.01 (molar:molar) was found to be the best electrode with the lowest transfer resistance based on the Nyquist plots. The specific capacitance of the best electrode, NiO-25, exhibited a specific capacitance of 435 Fgâ1 and 681 Fgâ1 with an energy density of 242 Whkgâ1 and 213 Whkgâ1 in 0.5Â M Na2SO4 and 0.5Â M KOH electrolyte, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 138, 20 August 2014, Pages 1-8
Journal: Electrochimica Acta - Volume 138, 20 August 2014, Pages 1-8
نویسندگان
Rusi Rusi, S.R. Majid,