| 초록 |
Great attention has been given to fabricating a number of nanomaterials to achieve high performance lithium ion batteries. Here, we report a synthesis of partially reduced ordered mesoporous tungsten oxide (m-WO3-x) and its anode application for lithium ion battery. The material was synthesized through a hard template method (KIT-6 silica template), followed by thermal reduction at H2/N2 atmosphere. As an anode, the m-WO3-x electrode exhibited a high initial discharge capacity (748 mAh g-1 at 0.1 C-rate) and good cyclability. Moreover, m-WO3-x electrode exhibited outstanding anode performance when compared with bulk reduced tungsten oxide (b-WO3-x) and ordered mesoporous tungsten oxide (m-WO3) electrodes. We conclude that the enhanced performance of m-WO3-x electrode was probably attributed to ordered mesoporous structure (surface area: 44 m2 g-1, uniform pores: 4 and 20 nm) and improved electric conductivity from the partial reduction of tungsten trioxide. |
