Understanding the mechanism and synergistic interaction of cobalt-based electrocatalysts containing nitrogen-doped carbon for 4 e⁻ ORR

Abstract

Considering that the cathodic oxygen reduction reaction (ORR) is sluggish, it is necessary to develop efficient and durable catalysts to accelerate this reaction.

Heterostructure NiCo-Alloy Nanosheet Embedded Ceria Nanorods: A Highly Efficient Bifunctional Electrocatalyst toward Oxygen Evolution Reaction and Oxygen Reduction Reaction

“…To determine the number of electrons involved in the ORR, Koutecky−Levich (K-L) plots were drawn at different potentials (Figure 5e). 12,13,78 The calculated electron number was 4.01, confirming the preferable four-electron reduction pathway on the surface of the synthesized electrocatalyst. Figure 5f compares the assessment parameters for the ORR among the fabricated materials.…”

“…The current density increases linearly with the increased rotations, reflecting the mass transport properties of the electrocatalyst and providing evidence that the synthesized material (NiCo-alloy@CeO 2 ) is active toward ORR. To determine the number of electrons involved in the ORR, Koutecky–Levich (K-L) plots were drawn at different potentials (Figure e). ,, The calculated electron number was 4.01, confirming the preferable four-electron reduction pathway on the surface of the synthesized electrocatalyst. Figure f compares the assessment parameters for the ORR among the fabricated materials.…”

Unveiling the Mechanisms of Catalytic CO2 Electroreduction through Machine Learning

“…The data set of the current study includes 159 experimental data points which were collected from 50 articles published between 2017 and 2022. ,,− ,− In this study, 90% of the data set is divided into the training set for developing the prediction model, and the remaining (10%) is considered the testing set for evaluating the prediction model. The primary data set consists of 15 features (inputs) and 5 labels (outputs) that are listed in Figure .…”

Highly efficient tungsten/molybdenum-based electrocatalysts for the oxygen reduction reaction: a review

“…So far, a large number of reports in the literature have explained the intrinsic mechanism of the ORR along the two pathways. [54][55][56] In an alkaline medium, the direct reaction path (1) or the indirect reaction path (2)-(3) of the ORR is as follows: 57 4e − pathway:…”