Constructing abundant active interfaces in ultrafine Ru nanoparticles doped nickel–iron layered double hydroxide to promote electrocatalytic oxygen evolution

Doping Ru on FeNi LDH/FeII/III–MOF heterogeneous core–shell structure for efficient oxygen evolution

“…S12c † represents the bond of M-OOH, further proving the generation of FeOOH and NiOOH. 50 In addition, as shown in Fig. S12d, † both peaks assigned to Ru 3p 3/2 and 3p 1/2 disappeared, further demonstrating the dissolution of Ru, 64 which explains the decrease of the OER property of Ru@FeNi LDH/MOF after 24 hours of electrolysis.…”

“…Dalton Transactions showed the largest ECSA, which increased the amount of accessible active sites on the surface of Ru@FeNi LDH/MOF. 50 It is noted that the C dl of FeNi LDH/MOF is smaller than that of Fe-soc-MOF, which could be attributed to the covering effect. FeNi LDH generated on the surface of Fe-soc-MOF and covered part of the pores, leading to the reduction of the active surface area.…”

Highly Stable Mo-NiO@NiFe-Layered Double Hydroxide Heterojunction Anode Catalyst for Alkaline Electrolyzers with Porous Membrane

“…6−8 Nonetheless, the existing issues such as low intrinsic conductivity, limited catalytic active sites, and poor stability for NiFe LDH immensely hinder further improvement of OER performance. 9 To address these challenges, previous reported works have proposed a variety of optimization strategies, including element doping, 10−12 vacancy creation, 13,14 exfoliation, 15,16 etc. Specifically, constructing the heterostructure is considered as one of the most efficient methods to accelerate OER reaction kinetics by enhancing electron coupling through interface engineering.…”

“…Among various transition metal-based catalysts, layered double hydroxide (LDH) has garnered significant attention for efficient OER on account of its unique lamellar structure and mutual regulation between different metal atoms. , In the bimetallic element combinations within LDH, the most promising synergy arises from the pairing of iron and nickel. The resulting NiFe LDH catalyst presents optimal intrinsic catalytic activity compared with other transition metal LDH, especially in alkaline water splitting. − Nonetheless, the existing issues such as low intrinsic conductivity, limited catalytic active sites, and poor stability for NiFe LDH immensely hinder further improvement of OER performance . To address these challenges, previous reported works have proposed a variety of optimization strategies, including element doping, − vacancy creation, , exfoliation, , etc.…”

Hierarchical Sea Urchin‐like Fe‐doped Heazlewoodite for High‐Efficient Oxygen Evolution

“…Compared to the hydrogen evolution at the cathode, the reaction kinetics of oxygen evolution at the anode remains much sluggish, leading to an increased working voltage for water-splitting. [14][15][16] Precious metal-based catalysts, particularly RuO 2 and IrO 2 , have been recognized as efficient catalysts for the oxygen evolution reaction (OER) in water electrocatalysis. [17][18][19] However, their high cost and limited reserves severely hindered their industrial application.…”