Morphological and Electronic Modulation in 3d B-Doped Ptce Alloyed Nanocrystals for Enhanced Electrooxidation to Various Alcohol Molecules

Published: Jan. 1, 2025

Language: Английский

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Boosting Alcohol Oxidation Electrocatalysis with Multifactorial Engineered Pd1/Pt Single-Atom Alloy-BiOx Adatoms Surface

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: March 3, 2025

Abstract Engineering nanomaterials at single-atomic sites could enable unprecedented catalytic properties for broad applications, yet it remains challenging to do so on the surface of multimetallic nanocrystals. Herein, we present multifactorial engineering (size, shape, phase, and composition) fully ordered PtBi nanoplates atomic level, achieving a unique catalyst where face-centered cubic ( fcc ) Pt edges are modified by isolated Pd atoms BiO x adatoms. This 1 /Pt-BiO electrocatalyst exhibits an ultrahigh mass activity 16.01 A mg −1 Pt+Pd toward ethanol oxidation in alkaline electrolyte enables direct fuel cell peak power density 56.7 mW cm −2 . The surrounding adatoms critical mitigating CO-poisoning surface, /Pt single-atom alloy further facilitates electrooxidation CH 3 2 OH. work offers new insights into rational design construction sophisticated highly efficient electrocatalysis.

Language: Английский

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Effect of carbon support on the electrochemical performance of Pt‐based anodes for bio‐alcohol fuel cells

Journal of Chemical Technology & Biotechnology, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Abstract BACKGROUND Direct alcohol fuel cells (DAFCs) are promising energy conversion devices, but their broader application is limited by slow kinetics of oxidation, catalyst poisoning, and high cost Pt‐based materials. In the present study we investigate impact different carbon supports, specifically graphene nanoplatelets (GNPs) black (Vulcan XC‐72), on electrochemical performance anodes. Additionally, ternary PtRuSn catalysts, where incorporation Sn intended to enhance catalytic while potentially reducing costs through partial substitution Ru. RESULTS Catalysts were synthesized using wet impregnation method, structural electronic properties thoroughly characterized a variety analytical techniques. supported GNPs exhibited smaller metal particle sizes enhanced activity compared those Vulcan XC‐72. Electrochemical analysis (CO stripping, cyclic voltammetry, chronoamperometry) revealed that GNP‐supported catalysts demonstrated lower onset potential, higher active surface area, current densities during oxidation. Notably, PtRuSn(5:4:1)/GNPs highest for ethanol glycerol highlighting role in enhancing both stability performance. CONCLUSION Overall, findings indicate can function as highly effective support anode DAFCs, dispersion stability. The use appears improving oxidation offering more balanced approach material cost. These insights could contribute development efficient economically viable cell technologies. © 2025 Author(s). Journal Chemical Technology Biotechnology published John Wiley & Sons Ltd behalf Society Industry (SCI).

Language: Английский

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Ionic liquid functionalized ZIF-8 modified PVDF nanofiber-based composite proton exchange membranes towards direct methanol fuel cells applications

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: unknown, P. 123990 - 123990

Published: March 1, 2025

Language: Английский

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Unitized regenerative fuel cells: Fundamental challenges and advancements

Renewable and Sustainable Energy Reviews, Journal Year: 2025, Volume and Issue: 215, P. 115631 - 115631

Published: March 18, 2025

Language: Английский

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