Super-thin LiV3O8 nanosheets/graphene sandwich-like nanostructures with ultrahigh lithium ion storage properties

With the thickness less than 5?nm, super-thin LiV₃O₈ nanosheets have already been successfully synthesized by transformation from super-thin V₂O₅·xH₂O nanosheets, moreover, super-thin LiV₃O₈ nanosheets@graphene (LVO/G) sandwich-like layer-by-layer nanostructures were successfully obtained via a facile self-assembly method and annealing treatment. Such interesting LVO/G nanostructures as cathodes for lithium ion batteries not only show high capacity up to 397.2?mA?h?g^?1 and outstanding rate capabilities (171?mA?h?g^?1 at 10?C, 112?mA?h?g^?1 at 15?C), but also present super-long cycle performance (301.2?mA?h?g^?1 after 500 cycles at 1?C). As far as we known, the LVO/G cathodes exhibit ultrahigh lithium storage performances even much higher than those of previously reported literatures of LiV₃O₈, which demonstrates that such sandwich-like layer-by-layer LVO/G nanostructures is a potential candidate cathode material for the next generation of batteries.