Stable mesoporous ZnFe2O4 as an efficient electrocatalyst for hydrogen evolution reaction

Self‐Supported NiS Nanoparticle‐Coupled Ni2P Nanoflake Array Architecture: An Advanced Catalyst for Electrochemical Hydrogen Evolution

“…The charge‐transfer resistances ( R ct ) of H + reduction at the electrode‐electrolyte interface of the CP/Ni(OH) 2 /NiS, CP/Ni 2 P and CP/ Ni 2 P/NiS nanoflake arrays are about 1324, 489, and 107.4 Ω, respectively. The R ct at electrode/electrolyte interface is usually used to assess the kinetics of electrochemical reaction at the surface of electrode, the smaller R ct value indicates faster kinetics . The CP/Ni 2 P/NiS heterostructure nanoflake array possesses the smallest R ct and solution resistance R s , signifying a considerably smaller electron transport resistance in the composite electrode.…”

Robust and stable ruthenium alloy electrocatalysts for hydrogen evolution by seawater splitting

“…Moreover, the use of fossil fuels has caused serious damages to the environment [1][2][3][4], therefore the creation of new energy with zero emissions is significantly crucial for low-carbon economy. Among various renewable resources, hydrogen energy has attracted growing interests owing to its merits on zero emission and high efficiency [5][6][7][8][9]. Hydrogen evolution and storage [10,11] are two main aspects for hydrogen energy utilization.…”

Cathodic Electrodeposition of Ni−Mo on Semiconducting NiFe2O4 for Photoelectrochemical Hydrogen Evolution in Alkaline Media

“…Unfortunately,g alvanic displacement is typically unsuitable for formation of metal-metal oxide interfaces. [19][20][21][22][23][24] Mo, [13,16,25,26] by making use of simple aqueous cathodic electrodeposition baths containing the metal precursors, sodium citrate as ac omplexing agent,a nd sodium hydroxide or ammonia to adjust the pH. [8,[12][13][14][15][16] Anodic electrodepositiono ns emiconductors is already well-established, creating oxide layers on top of as emiconductor.…”

“…[8] In this study,w ei nvestigated the possibility to directly deposit metal layers ontot he metal oxide semiconductor NiFe 2 O 4 ,which shows promising behavior when used as ap hotocathode. [19][20][21][22][23][24] This material can be metallized with NiÀ Photocathodes for hydrogen evolution from water were made by electrodepositiono fN i ÀMo layers on NiFe 2 O 4 substrates, deposited by spin coating on F:SnO 2 -glass. Analysis confirmed the formation of two separate layers, without significant reduction of NiFe 2 O 4 .B are NiFe 2 O 4 was found to be unstable under alkaline conditions during (photo)electrochemistry.T oi mprove the stabilitys ignificantly,t he deposition of ab ifunctional NiÀ Mo layer through af acile electrodeposition process wasp erformed andt he composite electrodes showed stable operation for at least 1h.M oreover,p hotocurrents up to À2.1 mA cm À2 at À0.3 Vv s. RHE were obtained forN i ÀMo/NiFe 2 O 4 under ambient conditions, showing that the new combination functions as both as tabilizing and catalytic layer for the photoelectrochemicale volution of hydrogen.…”