Ultralow overpotentials for oxygen evolution reactions achieved by nickel cobaltite aerogels

NiCoO2 nanowires grown on carbon fiber paper for highly efficient water oxidation

“…High OER activity of the Ni-and Co-based compounds has been achieved with, for instance, Ni-Co alloys [16], simple and mixed Ni-Co oxides (sulfides, selenides) [8,[17][18][19][20][21][22][23][24][25], perovskites [3,26], and NiCo hydro (oxy) oxides [15,27]. Moreover, the electrocatalyst based on the Ni-Co spinel structure have been intensely studied recently, such as NiCo 2 O 4 aerogels [28], NiCo 2 O 4 nanoplates [29], core-ring structured NiCo 2 O 4 [30], Ni x Co 3-x O 4 nanowire arrays [31]. The high OER activity of Ni-Co spinel catalysts is ascribed to the formation of active Ni-Co layered hydroxide/oxyhydroxide species during the catalysis process.…”

Oxidized Mild Steel S235: An Efficient Anode for Electrocatalytically Initiated Water Splitting

“…More recently,b enchmark species such as Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O y , [30] Pr 0.5 Ba 0.5 CoO y , [31] NiCo 2 O 4 -graphene hybrid, [32] NiCo 2 O 4 aerogel, [33] Ni 3 S 2 nanoarray supported by Ni metal, [34] and CuFe(MoO 4 ) 3 [35] were developed. Besidese lectrodeposited thin metal-containing films, ar ange of metals and metal alloys that include steel have been investigated andp roposed as catalysts for the electrocatalytic OER mainly in alkaline media.…”

FeCo2O4/hollow graphene spheres hybrid with enhanced electrocatalytic activities for oxygen reduction and oxygen evolution reaction

“…S5d). As shown in the corresponding equivalent circuit, R s is the resistance of the electrolyte, R o represent the resistance of the catalysts layer and R t shown in the low frequency region is related to charge transfer resistance during OER [50][51][52]. Both the R o (3.13 X cm 2 ) and R f (9.05 X cm 2 ) of FCO/HrGOS are lower than those of FCO + HrGOS mixture (8.59 X cm 2 and 33.52 X cm 2 ) (Table S1), respectively, and this will facilitate the OER process.…”