多维度纳米结构材料的设计，制备和电化学储能性能研究

讲座内容：We report some facile and general methods to directly grow metal oxide (TiO₂, SnO₂, NiO, Co₃O₄and NiCo₂O₄) nanosheets on 0-dimensional sulfonated polystyrene spheres, one-dimensional CNTs, polymeric nanotubes or mesoporous carbon fibers and two-dimensional graphene oxide. After calcinations in air or inert atmosphere, these materials were converted into metal oxides hollow spheres assembled from nanosheets and metal oxides nanosheets@carbon (graphene and CNTs) materials. Due to the porous structure (derived from the pile of nanosheets) and internal voids, these metal oxide nanosheets can store more lithium ions, have more fast lithium ions transfer rate and thus exhibit improved lithium storage capability. The carbon hollow spheres, CNTs and graphene support serves as a highly conductive substrate that is beneficial to the better lithium ions storage performance.