Surface reconstruction of cobalt phosphide nanosheets by electrochemical activation for enhanced hydrogen evolution in alkaline solution

Abstract

The surface reconstruction of cobalt phosphide nanosheets is investigated by an in situ electrochemical strategy for enhanced hydrogen evolution.

Electrochemically Facile Hydrogen Evolution Using Ruthenium Encapsulated Two Dimensional Covalent Organic Framework (2D COF)

“…This result confirms efficient HER activity for the Ru@COF electrocatalyst. The overpotential for HER with Ru@COF is comparable to other recently reported HER electrocatalysts (Table S4) . It is noteworthy to mention that Sun et al .…”

Accelerated alkaline hydrogen evolution on M(OH)x/M-MoPOx (M = Ni, Co, Fe, Mn) electrocatalysts by coupling water dissociation and hydrogen ad-desorption steps

“…In recent few years, abundant non-noble metal-based materials have been developed as promising electrocatalysts for hydrogen evolution under alkaline conditions. 7,8 Among these transition metal catalysts, molybdenum-based compounds, 9 such as alloys, 10 carbides, [11][12][13][14][15] chalcogenides, [16][17][18] and phosphides, [19][20][21] have recently attracted signicant research interest due to their desired chemical and physical properties. For example, as a prototypical model, MoS 2 is the rst reported transition metal-based HER catalyst, in which only the surface edges are catalytically active.…”

“Nano-garden cultivation” for electrocatalysis: controlled synthesis of Nature-inspired hierarchical nanostructures

“…Beneting from these proven synergistic effects, the HER activity was enhanced aer the longevity test. 58,59 In 1.0 M KOH, ower/CC CoP still exhibited an ultra-low overpotential of 55 mV at the benchmark 10 mA cm À2 , and the Tafel slope was 56 mV dec À1 . Likewise, the overpotential difference relative to leaf/CC became increasingly large when the current density rose, indicating that concentration polarization was also suppressed in ower/CC compared with that of leaf/CC.…”