Synergistic effect of Mn3+ and oxygen vacancy on the bifunctional oxygen electrocatalytic performance of MnOX/CNTs composites

Construction of Pt/Powder Charcoal Electrocatalyst Utilizing MnO2 as an Additive to Improve the Stability for Oxygen Reduction Reaction

“…As shown in Figure 4f, both Pt/PC and Pt/M-PC have smaller electron transfer resistances, indicating that they have a faster interfacial charge transfer process. 42,53 The findings of the activity are quite compatible with their electron transfer resistance, which is somewhat lower than that of commercial Pt/C. Based on the above analysis, the roles of Pt/M-PC in the electrocatalytic oxygen reduction process are shown in Scheme make the distribution of Pt on PC more uniform but also reduce the agglomeration degree in the reaction process.…”

“…In addition, the electron transfer resistance between electrode and electrolyte was measured by EIS. As shown in Figure f, both Pt/PC and Pt/M-PC have smaller electron transfer resistances, indicating that they have a faster interfacial charge transfer process. , The findings of the activity are quite compatible with their electron transfer resistance, which is somewhat lower than that of commercial Pt/C.…”

“…By comparison, the Pt 4f binding peak in Pt/M-PC shifted toward the direction of low binding energy. The decrease in binding energy indicates an increase in local electron density on Pt NPs, indicating a stronger interaction between Pt NPs and PC. , Due to the enhanced interaction, the d-band center of Pt shifts downward, which reduces the binding strength of oxygen-containing intermediates. ,− This phenomenon can balance the binding strength of Pt NPs to oxygen-containing intermediates and is beneficial to maintain the active sites number of Pt. ,, …”

Preparation of MnOx–Al2O3 aerogels and synergistic catalytic oxidation of toluene via ozone

“…By depriving the outer electrons of ozone, the electrostatic balance on the surface of the catalyst was maintained, and the generation of active oxygen was realized. 37,38 Compared to the other catalysts, the Mn 3+ /Mn ratio in the MnO x -Al 2 O 3 aerogel was the highest (0.69), in particular, 1.5 times higher than that in the MnO x -SiO 2 aerogel. In the reduction analysis (Fig.…”

Gas Diffusion Electrode Design and Conditioning with a Manganese(III/IV) Oxide Catalyst for Reversible Oxygen Reduction/Evolution Reactions

“…29 It has been reported that the introduction of highly conductive carbon nanotubes into MnO x electrodes can effectively reduce the charge transfer resistance and boost the ORR and OER activity. 57 Furthermore, carbon additives can catalyze ORR through a two-electron pathway, producing peroxide, which can complicate the desired four-electron reduction in batteries and fuel cells. In terms of reversible operation, the ORR/OER performance of oxygen electrodes may be effectively enhanced by combining different carbon supports.…”