Volume 35, Issue 3 (Journal of Advanced Materials-Fall 2016)                   2016, 35(3): 107-121 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Tahmasebi M H, Raeissi K, Golozar M A, Vicenzo A, Bestetti M. Study on the Effect of Annealing Process on Microstructure and Electrochemical Behavior of the Binary Mn-Ni Nano-Oxide Pseudocapacitor Synthesized by Anodic Deposition . Journal of Advanced Materials in Engineering (Esteghlal) 2016; 35 (3) :107-121
URL: http://jame.iut.ac.ir/article-1-860-en.html
1- Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran , drmht@ma.iut.ac.ir
Abstract:   (12320 Views)

In the present investigation, Mn-Ni binary nano-oxide was deposited by potentiodynamic method on stainless steel at room temperature and the effect of annealing process (at 200 oC for 6 h) on microstructure and electrochemical performance of the synthesized pseudocapacitor was studied. The results showed the significant effect of annealing process on increasing the capacitance and decreasing the charge transfer resistance of the electrode. Field Emission Scanning Electron Miscroscopy (FESEM) images depicted interconnected and random nano-flakes in the oxide film microstructure. Moreover, a partially crystallized structure consisting disorder hexagonal birnessite type phase was formed upon annealing in the deposited oxide film with about 10 %at Ni in composition. Based on the galvanostatic charge-discharge plots, the highest specific capacitance (384 F g-1) and specific energy (53 Wh kg-1) were found at specific current of 0.1 A g-1 for the annealed oxide electrode. Finally, cycle life test results at specific current of 10 A g-1 showed an excellent cyclability and an increase of about 23% in specific capacitance of synthesized pseudocapacitor after 5000 charge-discharge cycles in 1 M Na2SO4.

Full-Text [PDF 1191 kb]   (2875 Downloads)    
Type of Study: Research | Subject: General
Received: 2016/12/20 | Accepted: 2016/12/20 | Published: 2016/12/20

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


© 2024 CC BY-NC 4.0 | Journal of Advanced Materials in Engineering (Esteghlal)

Designed & Developed by : Yektaweb