Professor Wei-Ren Liu is a professor at Chung Yuan Christian University, where he is currently leading a research group on “Energy Materials Laboratory”. He received his doctoral degree from the National Taiwan University in 2006. He worked as a researcher at the Industry Technology Research Institute from 2006 to 2011. His main research interests include lithium-ion batteries, sodium-ion batteries, solid-state batteries, and graphene-based materials, as well as luminescence materials and perovskite quantum dots.