Three-dimensional Core@Shell Co@CoMoO4 nanowire arrays as efficient alkaline hydrogen evolution electro-catalysts

Recent advances in transition metal-based electrocatalysts for alkaline hydrogen evolution

“…Hitherto, CoO x , 119-121 VO 2 , 47 MnO 2 , 21,122 and NiO, 118,123 are representatives that possess high catalytic performance after modifications. Hybridizing TMOs with other electroactive materials (e.g., TMOs, [124][125][126] TMPs, 48,127 TMs, 123,128,129 TM alloys, 130,131 TMSs 132,133 ) is an advisable approach to improve the catalytic performance of bare have a more flexible redox property, and higher conductivity than the corresponding individual metal oxides, herein manifesting a better catalytic activity in electrochemistry. 48 However, the electrocatalytic ability of such pristine TMOs in HER is still unsatisfactory.…”

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.…”

Sulfur‐Induced Interface Engineering of Hybrid NiCo2O4@NiMo2S4 Structure for Overall Water Splitting and Flexible Hybrid Energy Storage

“…Figure 3f shows the ECSA of as-prepared electrocatalysts, which can be obtained from the double-layer capacitance ( Figure S6, Supporting Information). [36][37][38][39][40][41][42][43] To further investigate the electron transfer ability of electrocatalysts, electrochemical impedance spectroscopy (EIS) spectra are shown in Figure 3g. Excellent HER performance of NiCo 2 O 4 @NiMo 2 S 4 nanosheets can be attributed to large ECSA, which can increase number of active sites through S doping and the interface between NiCo 2 O 4 nanowires and NiMo 2 S 4 nanosheets.…”