Boosting electrocatalytic water oxidation of NiFe layered double hydroxide via the synergy of 3d–4f electron interaction and citrate intercalation

Abstract

Rational morphology design and electronic structure modulation can facilely boost the oxygen evolution reaction (OER) of NiFe layered double hydroxides (LDHs). Herein, hierarchical trimetallic NiFeCe-LDH intercalated with citrate anions was...

Hierarchically porous Ni foam-supported Co and Sn doped Ni3S2nanosheets for oxygen evolution reaction electrocatalysts

“…S7a †). 67,68 Cell performance tests were conducted at a temperature of 80 °C (55 °C) and a ow rate of 30 wt% (1 M) KOH solution equal to 200 ccm (300 ccm).…”

(FeMnCe)-co-doped MOF-74 with significantly improved performance for overall water splitting

“…In order to further enhance the catalytic performance of electrode materials, especially for electrical conductivity and stability, in this work, we introduce Ce element to construct 3d–4f trimetallic MOF-74, named (FeMnCe)-MOF-74. As reported in previous literature, 51–55 (1) the unique 4f orbitals of rare earth (RE) elements can overlap and hybridize with other orbitals, thereby adjusting the electronic structure of the target material; (2) the coupling between the d and f orbitals can build electronic ladders, which is conducive to charge transfer; (3) the materials constructed by 3d transition-metal atoms and 4f rare earth metals usually exhibit oxygen vacancy-enriched structural characteristics due to different atomic radii and coordination configurations, which lead to lattice distortion. Therefore, a 3d–4f mixed metal strategy is a very effective method to improve the electrocatalytic performance of MOF-based catalysts.…”

One-step electrodeposition of V-doped NiFe nanosheets for low-overpotential alkaline oxygen evolution

“…[22][23][24][25] For example, Wan et al showed that doping Ce into the NiFe LDH lattice greatly changed the electronic structure, thus optimizing the adsorption/desorption performance of the reactants and intermediates. 26 Zhao et al, through Mo doping, could effectively improve the lattice oxygen activity in NiFe (hydroxyl) hydroxide, thus significantly enhancing the intrinsic activity of the OER. 27 Vanadium is a transition metal abundant on Earth and is considered a potential dopant candidate.…”