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Effect of Gamma Irradiation on Poly(vinyledene Difluoride)-Lithium Bis(oxalato)borate Electrolyte

Mimi Hayati Abdul Rahaman, Mayeen Uddin Khandaker, Ziaul Raza Khan, Mohd Zieauddin Kufian, Ikhwan Syafiq Mohd Noor, Abdul Kariem Arof

Phys Chem Chem Phys. 2014 Jun 21;16(23):11527-37.

PMID: 24801055

Abstract:

A poly(vinyledene difluoride)-lithium bis(oxalato)borate solid polymer electrolyte prepared by a solvent casting method has been irradiated with different doses of gamma-rays. Differential scanning calorimetry reveals that the polymer electrolyte irradiated with 35 kGy of γ-rays is the most amorphous sample. This is also supported by the results obtained from X-ray diffraction. The Fourier transform infrared spectrum of each irradiated sample has been deconvoluted in the wavenumber region between 1830 and 1758 cm(-1) in order to predict the percentage of free and contact ions in the samples. The sample exposed to 35 kGy of γ-rays contains the highest percentage of free ions and the lowest amount of contact ions. This sample also exhibits the highest room temperature conductivity of 3.05 × 10(-4) S cm(-1), which is 15% higher relative to the virgin sample. The number density of free ions is observed to have more control on the conductivity variation with the γ-radiation dose compared to ionic mobility. This study confirms that γ-irradiation can be a potential way to obtain highly conductive and mechanically stable polymer electrolytes.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP244761293 Lithium bis(oxalato)borate Lithium bis(oxalato)borate 244761-29-3 Price
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