Hierarchical MoO2/Mo2C/C Hybrid Nanowires as High-Rate and Long Life Anodes for Lithium-Ion Batteries

作者：Yang, Lichun; Li, Xiang; Ouyang, Yunpeng; Gao, Qingsheng; Ouyang, Liuzhang; Hu, Renzong; Liu, Jun; Zhu, Min^*

来源：ACS Applied Materials & Interfaces, 2016, 8(31): 19987-19993.

DOI：10.1021/acsami.6b05049

• molybdenum dioxide
• molybdenum carbide
• hybrid materials
• capacitive behavior
• lithium-ion battery

Hierarchical MoO2/Mo2C/C hybrid nanowires (MoO2/Mo2C/C HNWs) have been fabricated through facile calcination of Mo3O10(C6H5NH3)(2)center dot 2H(2)O nanowires which serve as both precursors and self-templates. In the MoO2/Mo2C/C HNWs, nanoparticles dispersed in the nanowires are beneficial for Li+ transportation due to the decreased diffusion paths. Moreover, hybridization with Mo2C and carbon facilitates the electron transfer and increases the structural stability without sacrifice of capacity. As anode materials for lithium-ion batteries, the MoO2/Mo2C/C HNWs exhibit a reversible capacity of 950 mA h g(-1) after 320 cycles at a current density of 200 mA g(-1). Even when cycled at 2000 mA g(-1), they maintained a reversible capacity of 602 mA h g(-1) after 500 cycles. By incorporation of Mo2C and C with MoO2, the MoO2/Mo2C/C HNWs show high-rate capability and long cycle life and can be a promising candidate for lithium-ion battery anodes.

• 出版日期2016-8-10
• 单位华南理工大学; 暨南大学