Ionic conductivity and battery characteristic studies of a new PAN-based Na+ ion conducting gel polymer electrolyte system
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- 作者：N. Krishna Jyothi ; K. Vijaya Kumar ; G. Sunita Sundari…
- 关键词：Gel polymer electrolyte ; Solution casting technique ; DC conductivity ; Transference number ; Discharge characteristics ; 82.35.Rs ; 82.45.Wx ; 61.05.cp ; 66.30.hk ; 66.30.Dn
- 刊名：Indian Journal of Physics
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：90
- 期：3
- 页码：289-296
- 全文大小：1,540 KB
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K. Vijaya Kumar (1)
G. Sunita Sundari (1)
P. Narayana Murthy (2)
1. Department of Physics, K L University, Green Fields, Vaddeswaram, A.P., 522502, India
2. Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, A.P., 522510, India - 刊物类别：Physics and Astronomy
- 刊物主题：Physics
Astronomy
Astronomy, Astrophysics and Cosmology
Physics - 出版者：Springer India
- ISSN：0974-9845
文摘
Sodium ion conducting gel polymer electrolytes based on polyacrylonitrile (PAN) with ethylene carbonate and dimethyl formamide as plasticizing solvents are prepared by the solution cast technique. These electrolyte films are free standing, transparent and dimensionally stable. Na+ ions are derived from NaI. The structural properties of pure and complex formations have been examined by X-ray diffraction, Fourier transform infrared spectroscopic studies and differential scanning calorimetric studies. The variation of the conductivity with salt concentration ranging from 10 to 40 wt% is studied. The sample containing 30 wt% of NaI exhibits the highest conductivity of 2.35 × 10−4 S cm−1 at room temperature (303 K) and 1 × 10−3 S cm−1 at 373 K. The conductivity–temperature dependence of polymer electrolyte films obeys Arrhenius behavior with activation energy in the range of 0.25–0.46 eV. The transport numbers both electronic (t e) and ionic (t i) are evaluated using Wagner’s polarization technique. It is revealed that the conducting species are predominantly due to ions. The ionic transport number of highest conducting film is found to be 0.991. Solid-state battery with configuration Na/(PAN + NaI)/(I2 + C + electrolyte) is developed using the highest conducting gel polymer electrolyte system and the discharge characteristics of the cell are evaluated over the load of 100 KΩ. Keywords Gel polymer electrolyte Solution casting technique DC conductivity Transference number Discharge characteristics