Identifying the intrinsic active site in bimetallic Co₃S₄/Ni₃S₂ feathers on MXene nanosheets as a heterostructure for efficient oxygen evolution reaction

Abstract

Exploring economical, efficient and stable electrocatalysts toward the oxygen evolution reaction (OER) is of a crucial factor for the advancement of water splitting to optimize sustainable energy conversion technologies. Herein,...

Anion-induced electronic localization and polarized cobalt clusters for highly efficient water splitting

“…More importantly, the N-Co NCNTs electrocatalyst exhibits an outstanding OER performance with an ultralow overpotential of 178 mV at 10 mA cm −2 in an alkaline electrolyte, which is far superior to that of Co NCNTs (248 mV), commercial RuO 2 (251 mV), and most of the recently reported CNT-based materials and Co-based OER catalysts. 48–64 This fact reveals that the electronic regulation of cobalt clusters by nitrogen anions remarkably enhances the OER catalytic activity of the clusters by inducing the localization of electrons and forming polarized metal clusters. Additionally, in order to achieve optimal conditions, LSV curves were tested with different annealing times (Fig.…”

Heterostructure CoS2/MoS2 Nanosheets as a Dual-Active Electrocatalyst for the Oxygen Evolution Reaction

“…In recent years, tremendous endeavors have been committed to designing the fungible OER catalysts based on 3d transition metals, such as sulfides, − oxides, , nitrides, phosphides, , their hybrids, − and others. As alternatives to the above, the transition metal sulfide (TMS) MoS 2 has been widely regarded as a unique electrocatalyst for accelerating OER activity with superior electrical conductivity and a distinct electronic configuration .…”

Tailoring the d-band center of porous CoS2 nanospheres via low-electronegative Fe for weakened OH* adsorption and boosted oxygen evolution

“…[1][2][3][4][5][6] Unfortunately, the large-scale practical application of water splitting has been hampered due to the sluggish kinetics of the oxygen evolution reaction (OER). [7][8][9][10][11] At present, noble metal-based catalysts represented by RuO 2 and IrO 2 have been thought of as the most efficient materials towards the OER. Nonetheless, scarce reserves and expensive costs restrict their broad-scale utilization.…”