Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH4NO3 Solid Polymer Electrolyte Films
Affiliation(s)
Department of P.G. Studies in Physics, Government Science College, Chitradurga, India.
Department of P.G. Studies in Physics, Government Science College, Chitradurga, India.
ABSTRACT
Solid polymer electrolytes have been extensively studied due to wide applications in various electrochemical devices [1]-[3]. Most of the solid polymer electrolytes consist of polymer as a host material to provide strength and good mechanical stability and an inorganic salt that supplies ionic carriers to cause electrical conductivity. In our studies, we prepared PVA/NH4NO3 polymer electrolyte films by solution casting method. The prepared films with varied Ammonium Nitrate concentration from 0 - 20 wt% are characterized by XRD & FTIR spectroscopy. XRD results show that amorphous nature increases as the amount of the Ammonium Nitrate salt in PVA is increased. IR-spectra confirm the polymer salt complexes in the range of 3700 - 712 cm﹣1. Conductance analysis reveals that polymer electrolyte films containing 20 wt% of NH4NO3 exhibit the highest ionic conductivity of 1.01 × 10﹣7 S/cm while pure PVA films give the lowest ionic conductivity of 2.10 × 10﹣11 S/cm. It was evident from this study that the increase of ionic conductivity depended on the Ammonium Nitrate salt concentration. The dielectric constant exponentially decreases with increase of frequency for pure PVA and NH4NO3 doped PVA film composites. The temperature dependent studies of AC conductivity and dielectric constant also included to understand the conducting property. The results obtained by these studies are reported in this work.
Solid polymer electrolytes have been extensively studied due to wide applications in various electrochemical devices [1]-[3]. Most of the solid polymer electrolytes consist of polymer as a host material to provide strength and good mechanical stability and an inorganic salt that supplies ionic carriers to cause electrical conductivity. In our studies, we prepared PVA/NH4NO3 polymer electrolyte films by solution casting method. The prepared films with varied Ammonium Nitrate concentration from 0 - 20 wt% are characterized by XRD & FTIR spectroscopy. XRD results show that amorphous nature increases as the amount of the Ammonium Nitrate salt in PVA is increased. IR-spectra confirm the polymer salt complexes in the range of 3700 - 712 cm﹣1. Conductance analysis reveals that polymer electrolyte films containing 20 wt% of NH4NO3 exhibit the highest ionic conductivity of 1.01 × 10﹣7 S/cm while pure PVA films give the lowest ionic conductivity of 2.10 × 10﹣11 S/cm. It was evident from this study that the increase of ionic conductivity depended on the Ammonium Nitrate salt concentration. The dielectric constant exponentially decreases with increase of frequency for pure PVA and NH4NO3 doped PVA film composites. The temperature dependent studies of AC conductivity and dielectric constant also included to understand the conducting property. The results obtained by these studies are reported in this work.
Cite this paper
Manjunath, A. , Deepa, T. , Supreetha, N. and Irfan, M. (2015) Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH4NO3 Solid Polymer Electrolyte Films. Advances in Materials Physics and Chemistry, 5, 295-301. doi: 10.4236/ampc.2015.58029.
Manjunath, A. , Deepa, T. , Supreetha, N. and Irfan, M. (2015) Studies on AC Electrical Conductivity and Dielectric Properties of PVA/NH4NO3 Solid Polymer Electrolyte Films. Advances in Materials Physics and Chemistry, 5, 295-301. doi: 10.4236/ampc.2015.58029.
References
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http://dx.doi.org/10.1016/j.mseb.2007.03.003 [16] Ramya, C.S., Savitha, T., Selvasekharapandian, S. and Hiran Kumar, G. (2005) Transport Mechanism of Cu-Ion Conducting PVA Based Solid-Polymer Electrolyte. Ionics, 11, 436-441.
http://dx.doi.org/10.1007/BF02430262 [17] Ramesh, S., Yahana, A.H. and Arof, A.K. (2002) Dielectric Behaviour of PVC-Based Polymer Electrolytes. Solid State Ionics, 152-153, 291-294.
http://dx.doi.org/10.1016/S0167-2738(02)00311-9 [18] Tareev, B. (1979) Physics of Dielectric Materials. MIR Publications, Moscow.
[1] Qiao, J., Fu, J., Lin, R., Ma, J. and Liu, J. (2010) Alkaline Solid Polymer Electrolyte Membranes Based on Structurally Modified PVA/PVP with Improved Alkali Stability. Polymer, 51, 4850-4859.
http://dx.doi.org/10.1016/j.polymer.2010.08.018 [2] Hema, M., Selvasekerapandian, S., Hirankumar, G., Sakunthala, A., Arunkumar, D. and Nithya, H. (2009) Structural and Thermal Studies of PVA: NH4I. Journal of Physics and Chemistry of Solids, 70, 1098-1103.
http://dx.doi.org/10.1016/j.jpcs.2009.06.005 [3] Benedict, T.J., Banumathi, S., Veluchamy, A., Gangadharan, R., Ahamad, A.Z. and Rajendran, S. (1998) Characterization of Plasticized Solid Polymer Electrolyte by XRD and AC Impedance Methods. Journal of Power Sources, 75, 171-174.
http://dx.doi.org/10.1016/S0378-7753(98)00063-9 [4] Leones, R., Sentanin, F., Rodrigues, L.C., Marrucho, I.M., Esperanca, J.M.S.S., Pawlicka, A. and Silva, M.M. (2012) Investigation of Polymer Electrolytes Based on Agar and Ionic Liquids. Polymer Letters, 6, 1007-1016.
http://dx.doi.org/10.3144/expresspolymlett.2012.106 [5] Selvasekarapandian, S., Hema, M., Kawamura, J., Kamishima, O. and Baskaran, R. (2010) Characterization of PVA— NH4NO3 Polymer Electrolyte and Its Application in Rechargeable Proton Battery. Journal of the Physical Society of Japan, 79,163-168.
http://dx.doi.org/10.1143/JPSJS.79SA.163 [6] Kadir, M.F.Z., Aspanut, Z., Majid, S.R. and Arof, A.K. (2010) FTIR Studies of Plasticized Poly(Vinyl Alcohol)-Chitosanblend Doped with NH4NO3 Polymer Electrolyte Membrane. Spectrochimica Acta Part A, 78, 1068-1074.
http://dx.doi:10.1016/j.saa.2010.12.051 [7] Abdullah, O.Gh., Aziz, B.K. and Hussen, S.A. (2013) Optical Characterization of Polyvinyl Alcohol—Ammonium Nitrate Polymer Electrolytes Films. Chemistry and Materials Research, 3.
http://www.iiste.org/Journals/index.php/CMR/article/view/7045 [8] Stephen, A.M., Saito, Y., Muniyandi, N., Ranganathan, N.G., Kalyanasundaram, S. and Elizabeth, R.N. (2002) Solid State Ionics, 148, 467.
http://dx.doi.org/10.1016/S0167-2738(02)00089-9 [9] Fernandez, A., Torrecilla, J.S., Garcia, J. and Rodriguez, F. (2007) Thermophysical Properties of 1-Ethyl-3-methyli- midazolium Ethylsulfate and 1-Butyl-3-methylimidazolium Methylsulfate Ionic Liquids. Journal of Chemical & Engineering Data, 52, 1979-1983.
http://pubs.acs.org/doi/abs/10.1021/je7002786
http://dx.doi.org/10.1021/je7002786 [10] Singh, M.P., Singh, R.K. and Chandra, S. (2010) Effect of Ultrasonic Irradiation on Preparation and Properties of Ionogels. Journal of Physics D: Applied Physics, 43, 4. [11] Bhargav, P.B., Mohan, V.M., Sharma, A.K. and Rao, V.V.R.N. (2009) Investigations on Electrical Properties of (PVA:NaF) Polymer Electrolytes for Electrochemical Cell Applications. Current Applied Physics, 9, 165-171.
http://dx.doi.org/10.1016/j.cap.2008.01.006 [12] Kurumova, M., Lopez, D., Benavente, R., Mijangos, C. and Pevena, J.M. (2000) Effect of Crosslinking on the Mechanical and Thermal Properties of Poly(Vinyl Alcohol). Polymer, 41, 9265-9272.
http://dx.doi.org/10.1016/S0032-3861(00)00287-1 [13] El-Hefian, E.A., Nasef, M.M. and Yahaya, A.H. (2010) The Preparation and Characterization of Chitosan Poly(vinyl alcohol) Blended Films. E-Journal of Chemistry, 7, 1212-1219.
http://dx.doi.org/10.1155/2010/626235 [14] Hou, W.H., Chen, C.Y. and Wang, C.C. (2004) Conductivity, DSC, and Solid-State NMR Studies of Comb-Like Polymer Electrolyte with a Chelating Functional Group. Solid State Ionics, 166, 397-405.
http://www.sciencedirect.com/science/article/pii/S0167273803005307
http://dx.doi.org/10.1016/j.ssi.2003.09.021 [15] Ramesh, S. and Chai, M.F. (2007) Conductivity, Dielectric Behavior and FTIR Studies of High Molecular Weight Poly(vinylchloride)—Lithium Triflate Polymer Electrolytes. Materials Science and Engineering: B, 139, 240-245.
http://dx.doi.org/10.1016/j.mseb.2007.03.003 [16] Ramya, C.S., Savitha, T., Selvasekharapandian, S. and Hiran Kumar, G. (2005) Transport Mechanism of Cu-Ion Conducting PVA Based Solid-Polymer Electrolyte. Ionics, 11, 436-441.
http://dx.doi.org/10.1007/BF02430262 [17] Ramesh, S., Yahana, A.H. and Arof, A.K. (2002) Dielectric Behaviour of PVC-Based Polymer Electrolytes. Solid State Ionics, 152-153, 291-294.
http://dx.doi.org/10.1016/S0167-2738(02)00311-9 [18] Tareev, B. (1979) Physics of Dielectric Materials. MIR Publications, Moscow.