CoNi based alloy/oxides@N-doped carbon core-shell dendrites as complementary water splitting electrocatalysts with significantly enhanced catalytic efficiency

Unveiling the Origin of the High Catalytic Activity of Ultrathin 1T/2H MoSe2 Nanosheets for the Hydrogen Evolution Reaction: A Combined Experimental and Theoretical Study

“…[1][2][3][4][5][6] However,t he benchmark hydrogen evolution reaction( HER) suffers from sluggish reactionk inetics owing to additional water dissociation.M any efforts have been devoted to exploring different catalytic systems and the synthesis of high-performance catalysts for improvingt he HER. 2H 2 + O 2 )i se nvisioned to satisfy the globald emandf or clean and renewable energy,a ttracting significant attentionb ecause of its potential to replace fossil fuels.…”

“…2H 2 + O 2 )i se nvisioned to satisfy the globald emandf or clean and renewable energy,a ttracting significant attentionb ecause of its potential to replace fossil fuels. [1][2][3][4][5][6] However,t he benchmark hydrogen evolution reaction( HER) suffers from sluggish reactionk inetics owing to additional water dissociation.M any efforts have been devoted to exploring different catalytic systems and the synthesis of high-performance catalysts for improvingt he HER. [7][8][9][10] Notably,t he use of transition metal dichalcogenides has been intensively investigated by Rao and co-workers.…”

Two flowers per seed: Derivatives of CoG@F127/GO with enhanced catalytic performance of overall water splitting

“…S15) show slight shifts, suggesting that the changes in surface chemical environment and the formation of new species during HER process. The ratio of Co 0 /Co 2+ in Co 2p decreases and C-O and O-C=O bond strength in C 1 s increases after cycling, which indicate that the surface oxide/hydroxide exist in 1 M KOH [7]. It is reasonable that the anchoring effect between Co-C and GO may improve the stability of the catalyst [44].…”

“…In order to investigate the intrinsic activity, the turnover frequency (TOF) [43] value of catalyst has been measured. The calculated TOF value of Co-C/GO is 0.0089 s À1 at an overpotential of 187 mV (see calculations in SI), which indicates that more inner active sites can be efficiently utilized [7,43]. Electrochemical impedance spectroscopy (EIS) measurements have been conducted to probe the charge transfer kinetics of interfacial reactions (Fig.…”

“…Catalysts for hydrogen evolution reaction (HER) [1,2] and oxygen evolution reaction (OER) [3,4] are at the heart of key renewable-energy technologies such as electrochemical and photochemical water splitting [5][6][7][8]. Among them, commercial catalysts including noble metal (Pt, Ru) [9] and noble metal oxides (RuO 2 , IrO 2 ) own high catalytic activity toward HER and OER, however, the cost and scarcity limit their mass production and application in water splitting [10,11].…”