Jump to main content
Jump to site search


Heterolayered 2D nanohybrids of uniformly-stacked transition metal dichalcogenide-transition metal oxide monolayers with improved energy-related functionalities

Abstract

Heterolayered 2D nanohybrids of uniformly-stacked transition metal dichalcogenide (TMD)-transition metal oxide (TMO) monolayers are synthesized by a self-assembly of exfoliated nanosheets (NSs) with charge-balancing cations. This is the first example of the layer-by-layer-ordered 2D nanohybrid of exfoliated TMD and TMO nanosheets. The homogeneous intervention of MnO2 NS into restacked MoS2 NSs is quite effective in improving multifunctionality of MoS2 as electrocatalysts for hydrogen evolution reaction (HER) and electrodes for Li-ion batteries, underscoring the universal merit of the layer-by-layer ordering of TMD and TMO NSs. In-situ spectroscopic analysis for the present TMD-TMO nanohybrid during the electrocatalytic reaction highlights the efficient interfacial charge transfer of the restacked nanosheets with enhanced porosity. The beneficial effect of intervened TMO NS on the performance of TMD NSs is attributable to an efficient interfacial charge transfer and increased porosity with depressed self-stacking of NSs and the stabilization of metallic 1T TMD phase, resulting in the improvement of charge transfer kinetics, the enhancement of reactivity, and the provision of many reaction sites upon hybridization. Density functional theory (DFT) calculations further supports the stabilization of 1T TMD structure over 2H TMD one via the interaction with neighboring TMO NS. The present study clearly demonstrates that the restacking of the colloidal mixtures of TMO and TMD NSs can provide an effective way to explore novel multifunctional heterostructures.

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 May 2018, accepted on 12 Jul 2018 and first published on 13 Jul 2018


Article type: Paper
DOI: 10.1039/C8TA04167A
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
  •   Request permissions

    Heterolayered 2D nanohybrids of uniformly-stacked transition metal dichalcogenide-transition metal oxide monolayers with improved energy-related functionalities

    X. Jin, S. Shin, J. Kim, N. Lee, H. Kim and S. Hwang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA04167A

Search articles by author

Spotlight

Advertisements