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Vertical 1T-TaS 2 Synthesis on Nanoporous Gold for High-Performance Electrocatalytic Applications.
- Source :
-
Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2018 Apr; Vol. 30 (15), pp. e1705916. Date of Electronic Publication: 2018 Mar 07. - Publication Year :
- 2018
-
Abstract
- 2D metallic TaS <subscript>2</subscript> is acting as an ideal platform for exploring fundamental physical issues (superconductivity, charge-density wave, etc.) and for engineering novel applications in energy-related fields. The batch synthesis of high-quality TaS <subscript>2</subscript> nanosheets with a specific phase is crucial for such issues. Herein, the successful synthesis of novel vertically oriented 1T-TaS <subscript>2</subscript> nanosheets on nanoporous gold substrates is reported, via a facile chemical vapor deposition route. By virtue of the abundant edge sites and excellent electrical transport property, such vertical 1T-TaS <subscript>2</subscript> is employed as high-efficiency electrocatalysts in the hydrogen evolution reaction, featured with rather low Tafel slopes ≈67-82 mV dec <superscript>-1</superscript> and an ultrahigh exchange current density ≈67.61 µA cm <superscript>-2</superscript> . The influence of phase states of 1T- and 2H-TaS <subscript>2</subscript> on the catalytic activity is also discussed with the combination of density functional theory calculations. This work hereby provides fundamental insights into the controllable syntheses and electrocatalytic applications of vertical 1T-TaS <subscript>2</subscript> nanosheets achieved through the substrate engineering.<br /> (© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Details
- Language :
- English
- ISSN :
- 1521-4095
- Volume :
- 30
- Issue :
- 15
- Database :
- MEDLINE
- Journal :
- Advanced materials (Deerfield Beach, Fla.)
- Publication Type :
- Academic Journal
- Accession number :
- 29512246
- Full Text :
- https://doi.org/10.1002/adma.201705916