Liquid metal unlocks hydrogel that stretches 900% and resists freezing when other electrolytes fail

A research group led by Prof. Sungjune Park from the Department of Chemical Engineering has developed an ultra-stretchable, anti-freezing hydrogel electrolyte using liquid metal particles. The material can stretch up to nine times its original length while maintaining stable electrochemical performance, even at −20 °C. This work provides a promising platform for energy storage devices that must operate reliably under extreme environmental conditions.