Di-Jia Liu is a Senior Chemist at Chemical Sciences & Engineering Division of Argonne National Laboratory. His current research interests include design and synthesis of nanomaterials for electrocatalysis, fuel cells, gas storage, hydrogen production by water splitting, water purification and more recently, electrocatalytic conversion of CO2 to chemicals and fuels. Before joining Argonne in 2002, he was a Senior Principal Scientist at Honeywell International. Liu received B. Sc. degree in Chemistry from Peking University in 1982, Ph. D. degree in Physical Chemistry from The University of Chicago in 1987 and postdoctoral training at The University of California at Berkeley from 1988 to 1990. He published over 100 peer reviewed scientific publications, including 5 in Science and Nature family journals, received 30 granted US patents and four R&D 100 Awards.