Composite gel polymer electrolytes containing core-shell structured SiO2(Li+) particles for lithium-ion polymer batteries

In this work, we report novel composite gel polymer electrolyte for lithium-ion polymer batteries. As the lithium ion sources of single ion conductor, the core–shell structured SiO2(Li+) particles with uniform spherical shape are synthesized and used as functional fillers in composite gel polymer electrolytes. We show that our material, based on the incorporation of core–shell structured SiO2(Li+) particles into a gel polymer matrix, acts as a very effective polymer electrolyte for lithium-ion polymer batteries.

► Core–shell structured SiO2 particles with uniform spherical shape were synthesized.
► Novel composite gel polymer electrolytes had unique transport properties.
► The cells assembled with composite electrolytes exhibited good cycling performance.