文摘
A three-dimensionally graphene-sandwiched secondary battery electrode concept is demonstrated by P. V. Braun and co-workers on page 7696. As an example, a cathode consisting of an electrically conductive 4≈10 layer thick graphene sheet embedded within electrochemically active vanadium pentoxide (the colorized SEM image on frontispiece), which exhibits a good electrochemical performance including high capacity and long cycling life, was formed.