alexa Electrochemical Co-deposition Of PPy-MnO2 Nanocomposite Thin Film Electrodes For Supercapacitors: Effects Of Different Deposition Parameters On The Specific Capacitance Of The Electrode Materials
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Share This Page

Additional Info

Loading Please wait..

8th International Conference and Exhibition on Materials Science and Engineering
May 29-31, 2017 Osaka, Japan

Jennet R Rabo, Florentino C Sumera and Marlon T Conato
University of the Philippines, Philippines
Posters & Accepted Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022-C1-065
Supercapacitors are one of the most promising energy storage devices due to their higher power density, fast charging and discharging rate, long cycle life, low manufacturing cost and intrinsic safety. These properties are dependent on the electrode materials used. Transition metal oxide has been used as electrode materials due to their higher capacitance however they have poor electrical conductivity and poor structural properties. To compensate these drawbacks, conducting polymers were embedded to metal oxide to form composite nanostructured electrodes. In this paper, electrodes were prepared based on polypyrrole (PPy) and manganese dioxide (MnO2) by electrochemical do-deposition process. The effects of the different electrochemical deposition parameters on the morphological and electrochemical properties of the electrode materials were determined using Scanning Electron Microscopy (SEM), Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). The structural properties were determined using X-ray Diffraction Analysis (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) and the relative surface roughness was obtained using Atomic Force Microscopy (AFM). PPy-MnO2 nanocomposite thin films were electrochemically co-deposited using potentiodynamic, potentiostatic, and galvanostatic deposition techniques. Galvanostatic deposition method of about 1 mA/cm2 current density for 5-minute deposition time has allowed the deposition of electrode with the highest capacitance value of about 190 F/g with γ-MnO2 crystal polymorph on the electrochemically co-deposited PPy-MnO2 nanocomposite thin films. At the same time, the presence of PPy and MnO2 components on the nanocomposite thin films were confirmed also through FTIR analysis. The granular and porous structure was observed using SEM images. The morphological properties correspond to the obtained specific capacitance of the individual electrodes were confirmed using CV measurement. Figure 1 shows the CV of the nanocomposite electrodes at various scan rates.

Email: [email protected] [email protected]

image PDF   |   image HTML

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version