Common battery solvent ethylene carbonate with high 37°C melting point facilitates efficient lithium-ion conduction even when frozen

https://news.unist.ac.kr/lithium-ion-conduction-in-frozen-organic-electrolytes-for-advanced-battery-applications/

"mixed with small amount lithium salt... high ionic conductivity (~0.64 mS/cm)/ high lithium-ion transference (~0.8), on par with advanced solid-state electrolytes... solvent molecules immobilized/ lithium ions hop between oxygen atoms within solid matrix... prevents dendrites, stable, supports >400 charge-discharge cycles at room temperature in lithium iron phosphate batteries... no expensive/ brittle inorganic ceramic materials... future: find other organic solvent combinations with even higher melting points"