Electronic interaction boosted electrocatalysis of iridium nanoparticles on nitrogen-doped graphene for efficient overall water splitting in acidic and alkaline media

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

“…(C) RF N 2 plasma bombardment to realize defective graphene sheets doped with abundant N atoms. Reproduced with permission: Copyright 2021, Elsevier B.V 129 . (D) Formation of many micro‐trenches on the Ni foam surface after exposing to high‐energy filaments in DBD plasmas.…”

“…Plasma doping is an effective approach with advantages such as high dopant energy, versatility, and flexible dopant penetration depth and distribution by adjusting the pertinent plasma parameters 143,144 . In the study of Yi et al, graphene nanosheets are doped with N heteroatoms by RF N 2 plasma processing and adopted as unique supports for ultra‐small Ir nanoparticles with superior OER characteristics 129 as shown in Figure 8C. Li et al have performed in situ B incorporation into N‐doped carbon by a one‐step solution plasma process and B dopants are identified as the major active sites for OER catalysis 145 .…”

“…The redistributed charge density between the interface favors adsorption and dissociation of water molecules in HER 135 . Ir nanoparticles on N‐doped graphene exhibit superior electrocatalytic activity and durability because the abundant IrN coordination alters the surrounding electron arrangement to improve the HER and OER kinetics 129 . The Nb dopants in Nb‐doped layered FeNi phosphide nanosheets improve the energy barrier for species adsorption and reaction kinetics in HER and OER in alkaline media 158 .…”

BaLaIr double mixed metal oxides as competitive catalysts for oxygen evolution electrocatalysis in acidic media

“…Thus, the lack of high-performance electrocatalysts limits the development of the PEM water electrolysis technique. 11,12 At present, iridium and non-precious metal mixed metal oxide catalysts are deemed to be the most promising catalysts for the OER in acids, 13,14 namely Ba 3 TiIr 2 O 9 triple-perovskite, 15 SrIrO 3 perovskite, and NiIrRuAl nanoporous nanowires, 16 due to their lower cost by reducing Ir usage and the increased OER performance, especially for the mass activity. 17 In a recent report, the surface reconstruction of iridiumbased catalysts during the OER process has attracted attention.…”

Co‐Electrodeposition of Nanostructured Ce‐NiOx on Stainless‐Steel Substrates for the Oxygen Evolution Reaction under Alkaline Conditions

“…[26] In response to this, nonprecious transition metal-based electrocatalysts are currently being commercialized because they are abundantly available and economically viable. [8,[27][28][29][30][31][32][33][34] Nonprecious oxygen-evolving catalysts, especially some transition metal hydr(oxy)oxides and oxides, have seen significant advances in performance. In particular, those based on iron, manganese, chromium, nickel, and cobalt either in the mono, bi, or trimetallic oxide form show promise and within this element group, Ni has shown excellent intrinsic electrocatalytic activity while having the added advantage of being relatively inexpensive.…”