N-doped carbon confined CoFe@Pt nanoparticles with robust catalytic performance for the methanol oxidation reaction

Abstract

Pt-based electrocatalysts are essential to direct methanol fuel cells (DMFCs), but their sluggish reaction kinetics, poor stability, inefficient Pt utilization and susceptibility to CO poisoning hamper the widespread application of...

Immobilizing ultrasmall Pt nanocrystals on 3D interweaving BCN nanosheet-graphene networks enables efficient methanol oxidation reaction

“…, N, B, S, and P) can optimize their electronic structure and create abundant anchoring sites to improve the growth behaviors of noble metals. 24,25 Nevertheless, it is still difficult to achieve a high heteroatom-doping level (>6%) in carbon frameworks through the current doping methods, which largely restrain the overall synergistic catalytic effects. 26…”

ZIF-67-derived CoP/NC effectively supported Pt nanoparticles for methanol oxidation reaction

“…1–4 Currently, carbon-supported platinum (Pt/C) catalysts are the state-of-the-art catalyst for the methanol oxidation reaction (MOR) due to their stronger ability to cleave the C–H bond. 5–7 Nevertheless, problems still accompany the Pt/C catalyst such as the high cost and vulnerability to CO intermediate species poisoning; increasing Pt utilization by boosting the catalytic performance is a common concern for the catalyst development to realize large-scale commercialization in the fuel cell technique. 8–10…”

“…[1][2][3][4] Currently, carbon-supported platinum (Pt/C) catalysts are the state-of-the-art catalyst for the methanol oxidation reaction (MOR) due to their stronger ability to cleave the C-H bond. [5][6][7] Nevertheless, problems still accompany the Pt/C catalyst such as the high cost and vulnerability to CO intermediate species poisoning; increasing Pt utilization by boosting the catalytic performance is a common concern for the catalyst development to realize large-scale commercialization in the fuel cell technique. [8][9][10] To address the above-mentioned problems, some highefficiency Pt-based catalysts have been developed by designing novel catalyst systems, including the alloy strategy, catalyst support modification and catalytic promoter development.…”

Tuning the Ni/Co Ratios and Surface Concentration of Reduced Molybdenum States for Enhanced Electrocatalytic Performance in Trimetallic Molybdates: OER, HER, and MOR Activity

“…In this category, multi-metal hydroxides have unique advantages owing to a tuneable metal–cation ratio, the electronic structure, the interface, and also the chemical robustness. , Further, strategies such as morphological adjustments, doping concentration, and suitable construction of heterojunctions were considered earlier, but a structure–activity relationship is still unknown, thus demanding more focused research in this direction. , Specifically, understanding the effect of phase on key electrocatalytic properties is must for rational design of an electrocatalyst with high selectivity. − The transformation from one phase to the another attributed to doping was reported for bimetallic catalysts and tested for MOR. , The results suggested that increasing dopant concentration led to suitable structural and morphological modification and boosted the MOR activity. However, the alteration of electronic structure and interface properties, which are key to decide the fate of electrocatalytic efficiencies, were not discussed and hence remain elusive.…”