Temperature dependent dielectric properties and ion transportation in solid polymer electrolyte for lithium ion batteries
- Dielectric Research Laboratory, Department of Physics, Jai Narain Vyas University, Jodhpur – 342 005 (India)
Solid polymer electrolyte (SPE) film consisted of poly(ethylene oxide) (PEO) and poly(methyl methacrylate) (PMMA) blend matrix with lithium tetrafluroborate (LiBF{sub 4}) as dopant ionic salt and poly(ethylene glycol) (PEG) as plasticizer has been prepared by solution casting method followed by melt pressing. Dielectric properties and ionic conductivity of the SPE film at different temperatures have been determined by dielectric relaxation spectroscopy. It has been observed that the dc ionic conductivity of the SPE film increases with increase of temperature and also the decrease of relaxation time. The temperature dependent relaxation time and ionic conductivity values of the electrolyte are governed by the Arrhenius relation. Correlation observed between dc conductivity and relaxation time confirms that ion transportation occurs with polymer chain segmental dynamics through hopping mechanism. The room temperature ionic conductivity is found to be 4 × 10{sup −6} S cm{sup −1} which suggests the suitability of the SPE film for rechargeable lithium batteries.
- OSTI ID:
- 22606506
- Journal Information:
- AIP Conference Proceedings, Vol. 1728, Issue 1; Conference: ICC 2015: International conference on condensed matter and applied physics, Bikaner (India), 30-31 Oct 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORON FLUORIDES
CORRELATIONS
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
DOPED MATERIALS
ELECTROLYTES
FILMS
IONIC CONDUCTIVITY
LITHIUM COMPOUNDS
LITHIUM ION BATTERIES
METHACRYLIC ACID ESTERS
PLASMA SWITCHES
PLASTICIZERS
PMMA
POLYETHYLENE GLYCOLS
RELAXATION TIME
SOLAR PROTONS
SOLIDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K