Stabilizing an ultrathin MoS₂ layer during electrocatalytic hydrogen evolution with a crystalline SnO₂ underlayer.

ABSTRACT: Amorphous MoS₂ has been investigated abundantly as a catalyst for hydrogen evolution. Not only its performance but also its chemical stability in acidic conditions have been reported widely. However, its adhesion has not been studied systematically in the electrochemical context. The use of MoS₂ as a lubricant is not auspicious for this purpose. In this work, we start with a macroporous anodic alumina template as a model support, add an underlayer of SnO₂ to provide electrical conduction and adhesion, then provide the catalytically active, amorphous MoS₂ material by atomic layer deposition (ALD). The composition, morphology, and crystalline or amorphous character of all layers are confirmed by spectroscopic ellipsometry, X-ray photoelectron spect

SUBMITTER: Englhard J 

PROVIDER: S-EPMC8129885 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature