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Effect of TiO2 nano fillers on ionic conductivity enhancement in Mg(BH4)2:polyethylene oxide (PEO) polymer gel electrolyte.
- Source :
- Journal of Solid State Electrochemistry; Jul2024, Vol. 28 Issue 7, p2163-2173, 11p
- Publication Year :
- 2024
-
Abstract
- Temperature dependence of ionic conductivity of three different compositions of the Mg(BH<subscript>4</subscript>)<subscript>2</subscript>:polyethylene oxide (PEO):propylene carbonate (PC) polymer gel electrolyte with Mg(BH<subscript>4</subscript>)<subscript>2</subscript>:PEO molar ratios of 1:8, 1:10, and 1:12 was studied. The composition with Mg(BH<subscript>4</subscript>)<subscript>2</subscript>:PEO = 1:10 exhibited the highest ionic conductivity of 7.60 × 10<superscript>−6</superscript> S cm<superscript>−1</superscript> at 30 °C. The effect of TiO<subscript>2</subscript> nanofiller on ionic conductivity enhancement was studied for Mg(BH<subscript>4</subscript>)<subscript>2</subscript>:PEO:PC:TiO<subscript>2</subscript> polymer gel electrolyte by varying the TiO2 weight ratio from 0 to 12.5 wt.%. The highest ionic conductivity of 17.95 × 10<superscript>−6</superscript> S cm<superscript>−1</superscript> at 30 °C was exhibited by the electrolyte composition with 10 wt% of TiO<subscript>2</subscript> nanofiller. The optimized electrolytes had a Mg<superscript>++</superscript> cationic transference number of 0.22 for the filler free electrolyte and 0.30 for the TiO<subscript>2</subscript> 10wt% filler incorporated electrolyte. Both electrolytes had negligible electronic conductivity. A more than two-fold increase in the ionic conductivity and a 30% increase in Mg<superscript>++</superscript> ion transference number can be attributed to the nanofiller effect caused by TiO<subscript>2</subscript>. This preliminary study shows the possibility of developing this PEO-based polymer gel electrolyte to be used in rechargeable Mg ion batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14328488
- Volume :
- 28
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Journal of Solid State Electrochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 178293474
- Full Text :
- https://doi.org/10.1007/s10008-023-05748-8