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

Lichun Yang; Xiang Li; Yunpeng Ouyang; Qingsheng Gao; Liuzhang Ouyang; Renzong Hu; Jun Liu; Min Zhu

doi:10.1021/acsami.6b05049

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

ACS Appl Mater Interfaces. 2016 Aug 10;8(31):19987-93. doi: 10.1021/acsami.6b05049. Epub 2016 Jul 27.

Authors

Lichun Yang¹, Xiang Li¹, Yunpeng Ouyang¹, Qingsheng Gao², Liuzhang Ouyang¹, Renzong Hu¹, Jun Liu¹, Min Zhu¹

Affiliations

¹ School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology , Guangzhou 510641, People's Republic of China.
² Department of Chemistry, Jinan University , Guangzhou 510632, People's Republic of China.

PMID: 27400758
DOI: 10.1021/acsami.6b05049

Abstract

Hierarchical MoO2/Mo2C/C hybrid nanowires (MoO2/Mo2C/C HNWs) have been fabricated through facile calcination of Mo3O10(C6H5NH3)2·2H2O 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.

Keywords: capacitive behavior; hybrid materials; lithium-ion battery; molybdenum carbide; molybdenum dioxide.