A Study of electrical conductivity of Peo-X solid polymer electrolytes with X= LiCf3 So3 ZnC7 H5 O3 and PbI 2
| dc.contributor.author | Bandara, L. R. A. K. | |
| dc.contributor.author | Abeykoon, A. M. S. B. | |
| dc.contributor.author | Bokalawela, R. S. P. | |
| dc.contributor.author | Dissanayake, M. A. A. K. | |
| dc.date.accessioned | 2024-09-27T06:16:05Z | |
| dc.date.available | 2024-09-27T06:16:05Z | |
| dc.date.issued | 2001-11-16 | |
| dc.description.abstract | Solid polymer electrolytes occupy a unique posrtion in the development of a new generation of power source applications ranging from small portable electronic equipment to larger electric vehicles. These polymers, in thin film form, display many advantages over liquid electrolytes such as leakage proof and gassing. further, they show dual action both as ionic conductors and mechanical separators, which make them the most attractive solid polymer electrolyte in conducting polymer-based batteries. A wide range of salts can be dissolved in poly(ethylene oxide) (PEO) to form solid polymer electrolytes whose transport ions may be cations or anions. In this work, PEO based electrolyte films with three types of salts, namely lithium triflorosulfonate (LiCF3S03), zinc salizelate (ZnC7Hs03) and lead iodide (Pbh) were used and their electrical conductivity measurements were carried out. Samples have been prepared by the solvent casting technique. The complex impedance measurements were performed over the frequency range of 5 Hz to 13 MHz, using a computer controlled HP4192A impedance analyzer with an applied signal of 0.1 V. The impedance data were collected in the temperature range of 25°C to 85 "C. DC polarization test was carried out on all the samples, using both the blocking and non blocking electrodes, to estimate the tranfrerency numbers of the polymer electrolytes. Compared to the other two systems, PEO-LiCF3S03 system shows higher ionic conductivities. With both ZnC7Hs03 and Pbl- salts, PEO based solid polymer electrolytes show almost the same conductivity values within the studied temperature range. In all three systems, the ionic conductivity increases linearly with increasing temperature. The knee observed in these conductivity curves are assumed to be due to the melting of the crystalline phase of pure PEO. It was observed that the ionic conductivity is high in the amorphous phase above 55°C, in the presence of a flexible polymer chain. Results of the dc polarization test showed that all the studied samples had low electronic conductivities. According to the above results, PEO- LiCF3S03 and PEO-ZnC7Hs03 systems can be mainly considered as cationic conductors while the PEO-PbI2 system acts as anionic conductors. | |
| dc.description.sponsorship | The financial assistance from the International Programs for the Physical Sciences (IPPS), Uppsala University, Sweden and Postgraduate Institute of Science (PGIS), University of Peradeniya. | |
| dc.identifier.citation | Proceedings & abstracts of the Annual Research Sessions 2001,University of Peradeniya, Peradeniya, Sri Lanka,pp.152 | |
| dc.identifier.issn | 955-583-063-0 | |
| dc.identifier.uri | https://ir.lib.pdn.ac.lk/handle/20.500.14444/1155 | |
| dc.language.iso | en_US | |
| dc.publisher | University of Peradeniya, Peradeniya, Sri Lanka | |
| dc.subject | Electrical | |
| dc.subject | Polymer | |
| dc.subject | Science | |
| dc.title | A Study of electrical conductivity of Peo-X solid polymer electrolytes with X= LiCf3 So3 ZnC7 H5 O3 and PbI 2 | |
| dc.type | Article |