Ternary metal-based inverse spinel oxide NiCrFeO4 nanoparticles as a highly efficient oxygen evolution catalyst

A simple in situ deposition of metal alloys on graphite surface based on Sb, Bi, Cu, and Sn as an electrocatalyst for V 3 + / V 2 + redox reaction

“…As a result of the reduction of the ions at −0.6 V (vs SCE), alloy formation may occur in different morphology on the graphite surface like the study presented in the literature 52 . Furthermore, it has been shown in the studies about corrosion and O 2 evolution catalyst that the different metal composition of alloy on the surface also causes the differentiation of R ct values 53,54 . Among the binary ions presented in Table 2, Sb 3+ ‐Bi 3+ provides the lowest R ct value with similar behavior in the presence of their single ions, indicating the fastest electron transfer reaction.…”

“…52 Furthermore, it has been shown in the studies about corrosion and O 2 evolution catalyst that the different metal composition of alloy on the surface also causes the differentiation of R ct values. 53,54 Among the binary ions presented in Table 2, Sb 3+ -Bi 3+ provides the lowest R ct value with similar behavior in the presence of their single ions, indicating the fastest electron transfer reaction. Besides, it could be seen that the hydrogen evolution still significantly affects the charge transfer resistances in Cu-containing alloys.…”

Bimetallic iron cobalt oxide nanoclusters embedded on three-dimensional flower-like iron cobalt oxide nanosheets for improved oxygen evolution reaction

“…[8][9][10][11] As a result, a lot of research works has involved in design of low-cost OER electrocatalysts based on first-row transition metals and their oxides including cobalt oxide nanoparticles, iron oxide, nickel oxide, manganese oxide composites thin films, etc. [12][13][14][15][16][17][18] Over the past decades, transition metal oxides (TMOs)-based nanomaterials offered a range of possible unique features such as shape-and size-dependent properties, formation of high crystallinity, high surface energy and other chemical compositions integrated characteristics that can contribute to electrocatalytic properties. [19][20][21][22][23] Nonetheless, because of their undesirable adsorption energies (ΔE) of the chemical intermediates and weak conductivity, the apparent performance of virgin metal oxides is often unsatisfactory.…”

“…8–11 As a result, a lot of research studies have focused on the design of low-cost OER electrocatalysts based on first-row transition metals and their oxides including cobalt oxide nanoparticles, iron oxide, nickel oxide, manganese oxide composite thin films, etc. 12–18…”

“…have been investigated for OER performance. 16,[25][26][27][28][29] The partial substitution of an active redox element Fe (d 6 ) may result in increased d-electron deficiency, favouring OER features. To date, numerous approaches on non-noble metal-based SOCs have been used to compete with the high OER performance of noble metal-based catalysts, including regulating phase composition, shape, and intrinsic defects and metal doping.…”