Unveiling the intrinsic properties of single NiZnFeOx entity for promoting electrocatalytic oxygen evolution

Easy conversion perovskite fluorides KCo1−xFexF3 for efficient oxygen evolution reaction

“…S10a (ESI †) that abundant Co 3+ 2p 3/2 at the binding energy of 782.52 eV forms, 32,33 indicating the formation of (Co 3+ Fe 3+ )OOH during the OER process. 34 Furthermore, the presence of more Fe 3+ 2p 3/2 than in the fresh-prepared sample is also consistent with the formation of high metal valence (oxy)hydroxide species with outstanding OER activity (Fig. S11b, ESI †).…”

Simple and Efficient Method for Screening Electrocatalyst Supports at the Single Nanoparticle Level

“…Single NP collision electrochemistry (SNCE) can measure the transient signals from individual events when single NPs stochastically collide with an ultramicroelectrode. − Therefore, the SNCE method provides a unique tool for determining the intrinsic activity and reaction kinetics of individual electrocatalysts . Moreover, high mass transfer of single NPs on the ultramicroelectrode can avoid ensemble and film effects that are often encountered during the conventional electrocatalytic measurements on a macroscopic scale. , Recently, SNCE has already demonstrated its screening capabilities in the case of bimetallic NPs toward methanol oxidation and ORR .…”

Modulating vacancies of graphene supported FeNi2S4 electrocatalysts by radio-frequency plasma for overall water splitting

“…Due to the endothermic nature of these reactions, the electron transfer process is sluggish. OER involves an intricate four-electron transfer process, requiring a significantly higher overpotential than the two-electron transfer process in HER for water electrolysis [7][8][9]. Presently, the high-performance OER and HER catalysts primarily include noble metals like iridium (Ir), ruthenium (Ru), platinum (Pt), and their derivatives.…”