The formation of a hybrid structure from tungsten selenide and oxide plates for a hydrogen-evolution electrocatalyst
Abstract
It has been found that the pulsed laser deposition of a thin tungsten selenide film, followed by thermal treatment at 550°C in an Ar + O2 mixture of gases, results in the formation of a hybrid structure that is made up of ultrathin WSe2 and WO3- y platelets. The structural and size characteristics of the nanoplatelets deposited on microcrystalline graphite provide the effective hydrogen evolution reaction in a 0.5 M H2SO4 solution, with the cathode current made about seven times higher at a potential of-100 mV and the slope of the Tafel characteristic reduced from 340 to 90 mV/dec.
- Publication:
-
Technical Physics Letters
- Pub Date:
- June 2016
- DOI:
- 10.1134/S1063785016060055
- Bibcode:
- 2016TePhL..42..555F