Nanocarved MoS2-MoO2 Hybrids Fabricated Using in Situ Grown MoS2 as Nanomasks

Dingbin Xiao; Jinying Zhang; Xin Li; Dan Zhao; Hongyang Huang; Jialiang Huang; Daxian Cao; Zhihui Li; Chunming Niu

doi:10.1021/acsnano.6b04643

Nanocarved MoS₂-MoO₂ Hybrids Fabricated Using in Situ Grown MoS₂ as Nanomasks

ACS Nano. 2016 Oct 25;10(10):9509-9515. doi: 10.1021/acsnano.6b04643. Epub 2016 Oct 14.

Authors

Dingbin Xiao¹, Jinying Zhang¹, Xin Li¹, Dan Zhao¹, Hongyang Huang¹, Jialiang Huang¹, Daxian Cao¹, Zhihui Li¹, Chunming Niu¹

Affiliation

¹ Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710054, Shaanxi, China.

PMID: 27732777
DOI: 10.1021/acsnano.6b04643

Abstract

The morphology and hybridization of nanostructures are crucial to achieve properties for various applications. An in situ grown three-dimensional (3D) MoS₂ nanomask has been adopted to control the morphology and hybridization of molybdenum compounds. The in situ generated MoS₂ mask on MoO₃ nanobelt surfaces allowed us to fabricate a 3D c-MoO₂@MoS₂ hybrid nanostructure, in which c-MoO₂ is a carved MoO₂ nanobelt with a well-distributed hole pattern. The nanomasks have been controlled by adjusting the alignments of MoS₂. The exposed MoO₂ surfaces of c-MoO₂@MoS₂ were further sulfurated to give cw-MoO₂@MoS₂, in which all surfaces of MoO₂ are wrapped by a few layers of MoS₂. The structure synergistically enhanced the electrochemical performances of MoO₂ and MoS₂, especially at high current rates. Reversible capacities of 1418 and 295 mAh/g after 115 and 300 cycles still remained for the cw-MoO₂@MoS₂ anodes at current rates of 1 and 10 A/g, respectively.

Keywords: Li-ion battery; hybrid nanostructure; in situ grown nanomask; molybdenum disulfide; molybdenum oxide; nanocarved structures.