کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6617814 | 459633 | 2013 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical supercapacitor electrode material based on polyacrylic acid/polypyrrole/silver composite
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
In the present work, we have synthesized polypyrrole (PPY)/polyacrylic acid (PAA)/silver (Ag) composite electrodes by chemical polymerization via a simple and cost effective dip coating technique for supercapacitor application. Fourier transform-infrared, Fourier transform-Raman, X-ray photoelectron and energy dispersive X-ray spectroscopy techniques are used for the phase identification. Surface morphology of the films is examined by field emission scanning electron microscopy, which revealed granular structure for PPY, spherical interlaced granules for PPY/PAA and granules with bright spots of Ag nanoparticles for the PPY/PAA/Ag composites. The supercapacitive behavior of the electrodes is tested in three electrode system with 0.1 M H2SO4 electrolyte by using cyclic voltammetery and charge discharge test. The highest specific capacitance 226 F gâ1 at 10 mV sâ1 and energy density of 17.45 Wh kgâ1 at 0.5 mA cmâ2 is obtained for the PPY/PAA/Ag composite electrodes. Present work demonstrates an easy way of improving specific capacitance of the polymer electrodes. Thus the work will open a new avenue for designing low cost high performance devices for better supercapacitors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 105, 30 August 2013, Pages 569-577
Journal: Electrochimica Acta - Volume 105, 30 August 2013, Pages 569-577
نویسندگان
Dipali S. Patil, Sachin A. Pawar, Rupesh S. Devan, Myeng Gil Gang, Yuon-Ron Ma, Jin Hyeok Kim, Pramod S. Patil,