Cobalt oxide hollow nanoparticles as synthesized by templating a tri-block copolymer micelle with a core–shell–corona structure: a promising anode material for lithium ion batteries

Cobalt oxide hollow nanospheres fabricated by core–shell–corona micelle of poly(styrene- block -methylacrylate- block -ethyleneglycol) in aqueous solution show good electrochemical properties for lithium batteries.