Electrodeposited Transition Metal Dichalcogenides for Use in Hydrogen Evolution Electrocatalysts

Hydrogen is a promising alternative to gasoline due its higher energy density and ability burn cleanly only producing H 2 O as by-product. Electrolytic water splitting an effective technique for generating molecular hydrogen. However, hydrogen be viable source produced from electrolysis, affordable durable electrocatalysts need developed replace platinum. Transition metal dichalcogenides (TMDs) are since they abundant, inexpensive, have tunable structure. There various ways produce TMD films including chemical mechanical exfoliation, vapor deposition (CVD), electrodeposition. Exfoliation CVD techniques often require transfer of TMDs the growth substrate electrode, which introduces impurities possible defects film. Electrodeposition, however, provides way directly onto electrode with excellent surface coverage. This work uses electrodeposition bilayer electrodes using sequential electrocatalytic evolution reaction (HER). The results presented include cost-effective along enhanced proton reduction activity sequentially deposited structure consisting MoS MoSe , suggests electron kinetics conductive glass top-layer layer. Furthermore, structures synthesized by characterized via XPS, XPS depth-profiling, SEM-EDS understanding fabricated