Morphology-controlled Synthesis of Hollow Core-shell Structural alpha-MoO3-SnO2 with Superior Lithium Storage

作者：Wang Ya Peng^*; Liu Jia Jia; Liu Chun Xiao; Chen Wei Wei; Li Ting Ting; Guo Hong

来源：Journal of Inorganic Materials, 2015, 30(9): 919-924.

DOI：10.15541/jim20140612

• SnO2
• MoO3
• hollow core-shell materials
• nanostructures
• electrochemistry

An effective approach of alcoholysis was employed to prepare hollow core-shell MoO3-SnO2 hybrid nanoparticle aggregates as anode materials for Li-ion batteries. The as-prepared samples were characterized by XRD, SEM, TEM, CV, and galvanostatical method. The results show that the unique hollow structures can shorten the distance Li-ion diffusion, and the hollow structure offers a sufficient void space, which sufficiently alleviates the mechanical stress caused by volume change. The as-obtained hollow core-shell MoO3-SnO2 hybrid electrodes can retain a discharge capacity of 865 mAh/g at current density of 50 mA/g after 100 charge-discharge cycles. Even at the current density of 1000 mA/g, the MoO3-SnO2 hybrid electrodes can still deliver a high reversible discharge capacity of 545 mAh/g. Therefore, the hollow MoO3-SnO2 hybrid electrode exhibits stable cyclability and good rate capability. This method is simple, low cost and mass-productive, and may also be used to prepare other advanced functional materials.

• 出版日期2015-9-20
• 单位云南大学