We aim to develop novel energy materials that are meaningful for the next generation electrical energy storage and conversion. We perform fundamental research on understanding how the interplays between surface chemistry and electrochemical potential direct the formation, transformation and stabilization of energy materials, and developing innovative approaches to synthesize materials with structure and property controlled across multiple length scale.We study the applications of these novel materials by assembling and testing various electrochemical devices particularly batteries and fuel cells. Some applications that we are currently interested in are high energy density rechargeable batteries and electrocatalysts that convert electricity into energy-dense liquid fuels.