Transport and Diffusion Properties in PEO-BaCl2 Polymer Electrolytes for Battery Applications

Autor:	B. Guruswamy, Shreedatta Hegde, Rohan N. Sagar, V. Ravindrachary
Rok vydání:	2019
Předmět:	chemistry.chemical_classification History Materials science Diffusion Barium chloride Doping technology industry and agriculture Electrolyte Polymer Conductivity Computer Science Applications Education chemistry.chemical_compound chemistry Chemical engineering Ionic conductivity Charge carrier
Zdroj:	Journal of Physics: Conference Series. 1172:012078
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1172/1/012078
Popis:	Barium chloride (BaCl2) doped polyethylene oxide (PEO) based solid polymer electrolyte (SPE) films are prepared using solution cast technique. Impedance analysis reveals that the ionic conductivity of pure PEO polymer enhances with frequency as well as BaCh concentrations, the maximum ac - ionic conductivity (1.09 × 10−4 Scm1) is observed at 10 wt% BaCl2 doped PEO polymer electrolyte films at high frequency. The temperature dependent conductivity studies were carried out for 10 wt% of BaCl2 concentration, here the maximum dc - ionic conductivity achieved is 1.44 × 10−2 Scm−1 at 333K temperature. From transport properties, it is observed that the transference number of ions in the polymer electrolyte system is 0.98 and electronic transference number are 0.019. Hence ions are the majority charge carriers than the electrons in BaCl2 doped PEO based solid polymer electrolytes. Diffusion coefficient study confirms the cations play a major role for the conduction mechanism with in the electrolyte system.
Databáze:	OpenAIRE
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