Journal
NANOMATERIALS
Volume 13, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/nano13172463
Keywords
oxygen evolution reaction; water splitting; cobalt molybdenum sulfide; cobalt molybdenum oxide; reduced graphene oxide
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In this study, various two-dimensional materials were used as supports for the bimetallic Co and Mo sulfide/oxide (CMSO) heterostructure. The CMSO supported on reduced graphene oxide (rGO), graphite carbon nitride (gC3N4), and siloxene (SiSh) exhibited better water electrolysis activity compared to pristine CMSO. Particularly, the CMSO@rGO showed a large surface area, low interface charge-transfer resistance, low overpotential of 259 mV (10 mA/cm2), a Tafel slope of 85 mV/dec, and excellent long-term stability over 40 hours of continuous operation in the oxygen evolution reaction.
In this study, various two-dimensional (2D) materials were used as supporting materials for the bimetallic Co and Mo sulfide/oxide (CMSO) heterostructure. The water electrolysis activity of CMSO supported on reduced graphene oxide (rGO), graphite carbon nitride (gC3N4), and siloxene (SiSh) was better than that of pristine CMSO. In particular, rGO-supported CMSO (CMSO@rGO) exhibited a large surface area and a low interface charge-transfer resistance, leading to a low overpotential and a Tafel slope of 259 mV (10 mA/cm2) and 85 mV/dec, respectively, with excellent long-term stability over 40 h of continuous operation in the oxygen evolution reaction.
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