2019-Sustainable Industrial Processing Summit
SIPS2019 Volume 11: New and Advanced Materials, Technologies, and Manufacturing
| Editors: | F. Kongoli, F. Marquis, N. Chikhradze, T. Prikhna |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2019 |
| Pages: | 174 pages |
| ISBN: | 978-1-989820-10-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Protecting Flexible Polypyrrole Electrodes from the Detrimental Effects of Airborne Ammonia Molecules
Azin Jafari1; Amir Amini2; Faramarz Hossein-Babaei3;1DEPARTMENT OF ELECTRICAL ENGINEERING, COLLEGE OF TECHNICAL AND ENGINEERING, WEST TEHRAN BRANCH, ISLAMIC AZAD UNIVERSITY, TEHRAN, IRAN, Teharan, Iran; 2DEPARTMENT OF ELECTRICAL ENGINEERING, COLLEGE OF TECHNICAL AND ENGINEERING, WEST TEHRAN BRANCH, ISLAMIC AZAD UNIVERSITY, TEHRAN, IRAN, Tehran, Iran; 3ELECTRONIC MATERIALS LABORATORY, ELECTRICAL ENGINEERING DEPARTMENT, K. N. TOOSI UNIVERSITY OF TECHNOLOGY, TEHRAN 16315-1355, IRAN, tehran, Iran;
Type of Paper: Regular
Id Paper: 384
Topic: 43
Abstract:
Supercapacitors are the major energy providers in the varieties of biomedical and communication subsystems [1]. Polypyrrole, a well-known hole conducting polymer, has been proposed and used as bendable electrodes for different electrode applications [2]. Particularly, the material has been successfully utilized as electrodes in the flexible supercapacitors. With all the favorable features such as easy deposition, low cost, bendability, and versatility, the material has shortcomings, among which mediocre conductivity and chemical sensitivity [3] are major deterrents. The aim of the present research work is to simultaneously enhance conductivity and reduce the chemical sensitivity of the material via its alloying with other organic substances.
Thin layers of polypyrrole with different compositions are formed via chemical polymerization method [4] on glass substrates with pre-deposited interdigitated gold electrodes. During polymerization surface-sensitized substrates are immersed in a 0.01 M solution of pyrrole monomer for a few minutes at 5 ℃. A 0.05 M solution of ammonium peroxodisulfate in deionized water is added as the oxidizing agent while continuously stirring. The process time is calibrated for achieving a polypyrrole thickness of 120 nm on the substrate. The alloying components, anthraquinone-2-sulfonic acid sodium salt monohydrate-5-sulfosalicylic acid dehydrate and α-naphthalene sulfonic acid, are introduced as 0.5 M solution of the respective component to the polymerization reactor.
The morphology of the produced layers are examined with plan view and cross-sectional FESEM. The surface quality of the samples is also examined with AFM. Conductivity measurements are carried out by forming diffusion bonded metallic contacts [5] to the double electrodes underneath the layer. These measurements are repeated in clean and ammonia-contaminated air atmospheres. The results indicate that alloying with α-NSA simultaneously increases the conductivity and decreases the pollution sensitivities of the polypyrrole layers.
The electrical conductivity changes in polypyrrole layers due to the addition of AQSANa-SSCA and α-NSA are reported for the first time. These additives decrease the sensitivity to the pollutants examined.
Keywords:
Energy; New and advanced materials; storage and use;References:
[1] L. Zhang, X. Hu, Z. Wang, F. Sun, and D. G. Dorrell. Renewable and Sustainable Energy Reviews. 81 (2018) 1868-1878.[2] YangHuang, HongfeiLi, ZifengWang, MinshenZhu, ZengxiaPei, QiXue, YanHuang, ChunyiZhi. Nano Energy. 22 (2016) 422-438.
[3] A. Jafari and A. Amini. Materials Letters. 236 (2019) 175-178.
[4] M. Mahmoodian, B. Pourabbas, and S. Mohajerzadeh. Thin Solid Films 538 (2015) 255-263.
[5] F. Hossein-Babaei, M. Gharesi, and M. Moalaghi. ACS applied materials & interfaces. 9 (2017) 26637-26641.