| 초록 |
Ultrasonic spray pyrolysis is an attractive way to create high purity homogeneous structures with spherical geometry. In addition, since the ultrasonic spray pyrolysis system operates continuously, mass production is possible. In this study, we directly synthesized ordered macroporous Ti doped MoO2–C microspheres using ultrasonic spray pyrolysis without conventional reducing agents such as hydrogen gas or ethylene glycol. Ti dopant played a role of reducing agent as well as enhancing phase stability of MoO2 structure in atmosphere, as Ti can affect the binding strength of oxygen atoms in MoO2 structure. Polystyrene (PS) beads as soft templates and dextrin as carbon source were used for fabrication of ordered macroporous structures. The synthesized ordered macroporous Ti doped MoO2–C materials were applied to electrodes of supercapicitors and showed high efficiency compared to conventional activated carbon materials. |
