Vertically Aligned Ws2 Nanosheets For Water Splitting

Keywords

2D materials; nanoengineering; nanosheets; tungsten disulfide; water splitting

Abstract

Vertically aligned WS2 (VAWS2) nanosheet films are prepared using a lithium based anodization electrolyte to fabricate WO3 films followed by sulfurization. The VAWS2 synthesized here is self-organized as a conformal structure to expose active edge sites for water splitting. These vertically aligned nanosheets are composed of exfoliated WS2 to provide abundant active edges for catalytic reactions. Hydrogen evolution activity of the VAWS2 is demonstrated to show high catalytic current, low onset overpotential and small Tafel slope. By certain measures, this VAWS2 nanosheet film outperforms some of the state-of-the-art hydrogen evolution reaction (HER) catalysts, which opens up a new pathway to simply and scalably fabricate high-performance water electrolysis catalysts.

Publication Date

10-1-2015

Publication Title

Advanced Functional Materials

Volume

25

Issue

39

Number of Pages

6199-6204

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1002/adfm.201502479

Socpus ID

84944277606 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84944277606

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