Yi Cui is a Professor in the Department of Materials Science and Engineering at Stanford University. He received his Ph.D in Chemistry at Harvard University (2002), B.S. in Chemistry at the University of Science and Technology of China (1998). His current research is on nanomaterials design for energy and environment and two-dimensional materials. In 2008 he founded Amprius Inc., a company that commercialized the breakthrough high-energy battery technology invented in his lab. He also co-founded 4C Air Inc. to develop novel filtration solution to remove PM2.5 particle pollutants from air.