Towards controlled synthesis of mesoporous carbon nanospheres for Li ion batteries - comparative studies

摘要

Two different kinds of mesoporous hollow carbon spheres with controllable diameters were produced from mesoporous core/shell structured silica template by CVD method. In these experiments, hexadecyltrimethylammonium bromide (CTAB)~1 and octadecyltrimetoxysilane (C_(18)TMS) were served as carbon seeds (active sites) for the carbon growth during CVD reaction. The potential applications such as lithium ion battery properties for these hollow carbon spheres were tested. The introduction of SnO_2 nanoparticles inside the mesoporous hollow carbon spheres can improve the lithium ion battery properties dramatically. The samples have been also investigated via high resolution transmission electron microscopy with EDX, X-Ray Diffraction and BET analysis.