Ultrathin MoS2 nanosheets as anode materials for sodium-ion batteries with superior performance

Authors

Dawei Su, University of WollongongFollow
S X. Dou, University of WollongongFollow
Guoxiu Wang, University of Technology SydneyFollow

RIS ID

97042

Publication Details

Su, D., Dou, S. & Wang, G. (2014). Ultrathin MoS2 nanosheets as anode materials for sodium-ion batteries with superior performance. Advanced Energy Materials, 5 (6), 1401205-1-1401205-6.

Abstract

Few-layer MoS₂ nanosheets are successfully synthesized using a simple and scalable ultrasonic exfoliation technique. The thicknesses of the MoS₂ nanosheets ares about 10 nm as measured by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The unique nanosheet architecture renders the high-rate transportation of sodium ions due to the short diffusion paths provided by ultrathin thickness and the large interlayer space within the MoS₂ crystal structure (d₍₀₀₂₎ = 6.38 Å). When applied as anode materials in sodium-ion batteries, MoS₂ nanosheets exhibit a high, reversible sodium storage capacity and excellent cyclability. The MoS₂ nanosheets also demonstrate good electrochemical performance at high current densities.