Ion transport property of hot-press cast Mg 2+ -ion conducting nano-composite p olymer electrolyte membranes: Study of effect of active/passive filler particle dispersal on conductivity (original) (raw)

Ion transport properties of Mg 2+ -ion conducting nano composite polymer electrolyte (NCPE) films have been i nvestigated. NCPE membranes were cast by a completely dry/solution free hot-press technique. Solid Polymer Electrolyte (SPE) composition: [85PEO: 15Mg(ClO4)2], identified as the highest conducting film in a separate study with room t emperature conductivity � ~ 2.27×10 -6 S /cm, has been used as I st -phase host matrix and different active (micro/nano-sized M gO) and passive (nano-sized SiO2 and TiO2) filler particles as II nd -phase dispersoid. Effect of fillers of different nature on i onic conductivity has been studied. As a consequence of dispersal of filler particles in fractional amount, conductivity (�) enhancement of approximately one order of magnitude could be achieved at room temperature along with substantial improvement in the mechanical integrity of the film. The total ionic transference number (tion) and the cationic (Mg 2+ ) t ransference number (t+) have bee...