summarizes the fundamental energy storage mechanisms, critical achievements, and critical challenges from the view of practical application.

Minghua Chen is the associate dean of School of Electrical and Electronic Engineering at Harbin University of Science and Technology in China and also the deputy director of Key Laboratory of Engineering Dielectric and Applications (Ministry of Education). He received Ph.D from Harbin University of Science and Technology, followed by exchange student and visiting scientist at Nanyang Technological University (NTU) from 2013 to 2016. Professor Chen has authored over 100 scientific publications. His research group is focusing on fundamental mechanism study, advanced materials design, and their applications for energy storage and conversion devices.