Laser Raman and ac impedance spectroscopic studies of PVA: NH4NO3 polymer electrolyte

M. Hema; S. Selvasekarapandian; G. Hirankumar; A. Sakunthala; D. Arunkumar; H. Nithya

doi:10.1016/j.saa.2009.11.012

Laser Raman and ac impedance spectroscopic studies of PVA: NH₄NO₃ polymer electrolyte

M. Hema, S. Selvasekarapandian, G. Hirankumar, A. Sakunthala, D. Arunkumar, H. Nithya

Research output: Contribution to journal › Article › peer-review

52 Citations (Scopus)

Abstract

Ion conducting polymer electrolyte PVA:NH₄NO₃ has been prepared by solution casting technique and characterized using XRD, Raman and ac impedance spectroscopic analyses. The amorphous nature of the polymer films has been confirmed by XRD and Raman spectroscopy. An insight into the deconvoluted Raman peaks of υ₁ vibration of NO₃^- anion for the polymer electrolyte reveals the dominancy of ion aggregates at higher NH₄NO₃ concentration. From the ac impedance studies, the highest ion conductivity at 303 K has been found to be 7.5 × 10^-3 S cm^-1 for 80PVA:20NH₄NO₃. The conductivity of the polymer electrolytes has been found to depend on the degree of dissociation of the salt in the host polymer matrix. The combination of the above-mentioned analyses has proven worth while and in fact necessary in order to achieve better understanding of these complex systems.

Original language	English
Pages (from-to)	474-478
Number of pages	5
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	75
Issue number	1
DOIs	https://doi.org/10.1016/j.saa.2009.11.012
Publication status	Published - 2010 Jan 1
Externally published	Yes

Keywords

Polymers
Raman spectroscopy
Transport properties
X-ray diffraction

ASJC Scopus subject areas

Analytical Chemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Spectroscopy

Access to Document

10.1016/j.saa.2009.11.012

Cite this

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title = "Laser Raman and ac impedance spectroscopic studies of PVA: NH4NO3 polymer electrolyte",

abstract = "Ion conducting polymer electrolyte PVA:NH4NO3 has been prepared by solution casting technique and characterized using XRD, Raman and ac impedance spectroscopic analyses. The amorphous nature of the polymer films has been confirmed by XRD and Raman spectroscopy. An insight into the deconvoluted Raman peaks of υ1 vibration of NO3- anion for the polymer electrolyte reveals the dominancy of ion aggregates at higher NH4NO3 concentration. From the ac impedance studies, the highest ion conductivity at 303 K has been found to be 7.5 × 10-3 S cm-1 for 80PVA:20NH4NO3. The conductivity of the polymer electrolytes has been found to depend on the degree of dissociation of the salt in the host polymer matrix. The combination of the above-mentioned analyses has proven worth while and in fact necessary in order to achieve better understanding of these complex systems.",

keywords = "Polymers, Raman spectroscopy, Transport properties, X-ray diffraction",

author = "M. Hema and S. Selvasekarapandian and G. Hirankumar and A. Sakunthala and D. Arunkumar and H. Nithya",

year = "2010",

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doi = "10.1016/j.saa.2009.11.012",

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T1 - Laser Raman and ac impedance spectroscopic studies of PVA

T2 - NH4NO3 polymer electrolyte

AU - Hema, M.

AU - Selvasekarapandian, S.

AU - Hirankumar, G.

AU - Sakunthala, A.

AU - Arunkumar, D.

AU - Nithya, H.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Ion conducting polymer electrolyte PVA:NH4NO3 has been prepared by solution casting technique and characterized using XRD, Raman and ac impedance spectroscopic analyses. The amorphous nature of the polymer films has been confirmed by XRD and Raman spectroscopy. An insight into the deconvoluted Raman peaks of υ1 vibration of NO3- anion for the polymer electrolyte reveals the dominancy of ion aggregates at higher NH4NO3 concentration. From the ac impedance studies, the highest ion conductivity at 303 K has been found to be 7.5 × 10-3 S cm-1 for 80PVA:20NH4NO3. The conductivity of the polymer electrolytes has been found to depend on the degree of dissociation of the salt in the host polymer matrix. The combination of the above-mentioned analyses has proven worth while and in fact necessary in order to achieve better understanding of these complex systems.

AB - Ion conducting polymer electrolyte PVA:NH4NO3 has been prepared by solution casting technique and characterized using XRD, Raman and ac impedance spectroscopic analyses. The amorphous nature of the polymer films has been confirmed by XRD and Raman spectroscopy. An insight into the deconvoluted Raman peaks of υ1 vibration of NO3- anion for the polymer electrolyte reveals the dominancy of ion aggregates at higher NH4NO3 concentration. From the ac impedance studies, the highest ion conductivity at 303 K has been found to be 7.5 × 10-3 S cm-1 for 80PVA:20NH4NO3. The conductivity of the polymer electrolytes has been found to depend on the degree of dissociation of the salt in the host polymer matrix. The combination of the above-mentioned analyses has proven worth while and in fact necessary in order to achieve better understanding of these complex systems.

KW - Polymers

KW - Raman spectroscopy

KW - Transport properties

KW - X-ray diffraction

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