Hierarchical Co/MoNi heterostructure grown on monocrystalline CoNiMoO_x nanorods with robust bifunctionality for hydrazine oxidation-assisted energy-saving hydrogen evolution

Abstract

Replacing thermodynamically unfavorable water oxidation by hydrazine oxidation reaction to accomplish energy-saving hydrogen evolution while efficiently disposing toxic hydrazine-rich wastewater is generally considered as an advantageous strategy. However, unsatisfactory high...

Au–Rh2P Mesoporous Nanotubes for the Hydrogen Evolution Reaction and Hydrazine Oxidation Electrooxidation

“…The Au−Rh 2 P MNTs have excellent HzOR activity with a low overpotential of 16 mV at 10 mA cm −2 , superior to that of Au− Rh MNTs (95 mV) and Pt/C (143 mV) (Figure 5b). The corresponding Tafel slope of Au−Rh 2 P MNTs (18.88 mV dec −1 ) is much smaller than that of Au−Rh MNTs (39.71 mV dec −1 ) and Pt/C (43.23 mV dec −1 ) (Figure 5c), suggesting that the HzOR process undergoes more favorable catalytic kinetics as follows 47 As illustrated in Figure 5d, the LSV curve shows negligible attenuation compared to the initial one after 5000 CV cycles, and the chronopotentiometry curve exhibits stable potential during continuous HzOR at 10 mA cm −2 for 20 h, demonstrating good electrochemical stability.…”

Amorphous/crystalline RhFeP metallene for hydrazine-assisted water splitting

“…Rh has similar physical and chemical properties to Pt, which has good corrosion resistance to electrolyte and excellent catalytic activity for HER and HzOR [14 -18]. Recently, the structural engineering and heteroatom doping can improve atom utilization rate and tailor electronic structure, which further improve the catalytic activity for HER and HzOR [19][20][21][22][23]. As a graphene-like material, metallene has a large specific surface area and high atom utilization rate, which has good catalytic performance [24][25][26][27].…”