کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1489132 | 992300 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Electrochemical behavior of potentiodynamically deposited cobalt oxyhydroxide (CoOOH) thin films for supercapacitor application Electrochemical behavior of potentiodynamically deposited cobalt oxyhydroxide (CoOOH) thin films for supercapacitor application](/preview/png/1489132.png)
In the present study, we report, for the first time, the synthesis of cobalt oxyhydroxide thin films on inexpensive stainless steel substrate using potentiodynamic electrodeposition method. These films were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) techniques. The orthorhombic crystal structure was revealed by the X-ray diffraction study. The FT-IR spectrum confirmed the formation of cobalt oxyhydroxide. The SEM studies showed the nanoflakes-like morphology with an average thickness of 100 nm. The cyclic voltammetry study of the cobalt oxyhydroxide films in 1 M KOH showed maximum specific capacitance of 449 F g−1 at scan rate of 5 mV s−1.
Scanning electron micrograph (SEM) images of cobalt oxyhydroxide thin film at (a) 2000× and (b) 10,000× magnifications.Figure optionsDownload as PowerPoint slideHighlights
► Simple method for the synthesis of CoOOH thin films.
► Supercapacitor with maximum specific capacitance of 449 F g−1.
► High charge/discharge efficiency.
Journal: Materials Research Bulletin - Volume 47, Issue 3, March 2012, Pages 672–676