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Title: Construction of a Pt‐CeO x Interface for the Electrocatalytic Hydrogen Evolution Reaction
Abstract The creation of metal‐metal oxide interfaces is an important approach to fine‐tuning catalyst properties through strong interfacial interactions. This article presents the work on developing interfaces between Pt and CeOxthat improve Pt surface energetics for the hydrogen evolution reaction (HER) within an alkaline electrolyte. The Pt‐CeOxinterfaces are formed by depositing size‐controlled Pt nanoparticles onto a carbon support already coated with ultrathin CeOxnanosheets. This interface structure facilitates substantial electron transfer from Pt to CeOx, resulting in decreased hydrogen binding energies on Pt surfaces, and water dissociation for the HER, as predicted by the density functional theory (DFT) calculations. Electrochemical testing indicates that both Pt specific activity and mass activity are improved by a factor of 2 to 3 following the formation of Pt‐CeOxinterfaces. This study underscores the significance and potential of harnessing robust interfacial effects to enhance electrocatalytic reactions.  more » « less
Award ID(s):
2011967
PAR ID:
10590671
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ;
Publisher / Repository:
Wiley
Date Published:
Journal Name:
Advanced Functional Materials
Volume:
34
Issue:
38
ISSN:
1616-301X
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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