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Updated: May 25, 2025

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Short-Path Hydrogen Spillover on CeO2-Supported PtPd Nanoclusters for Efficient Hydrogen Evolution in Acidic Media
Zixin Yan1, Zirui Liu2, Guosheng Zhou1
1Zhejiang Key Laboratory for Island Green Energy and New Materials, Taizhou University, Jiaojiang, Zhejiang, 318000, China.
Abstract:
Hydrogen spillover in supported metal electrocatalysts has garnered significant research attention for its potential to enhance the hydrogen evolution reaction (HER) efficiency. However, challenges remain in facilitating hydrogen spillover and reducing the associated energy barriers. Herein, PtPd alloy clusters are anchored to the CeO2 surface, enabling short-path hydrogen spillover and lowering the reaction energy barrier in acidic environments. During HER, hydrogen is initially adsorbed on the noble metal surface and subsequently migrates to the interface, rather than precipitating directly on the CeO2 surface. This interface exhibits a near-zero Gibbs free energy of hydrogen adsorption (0.023 eV). Consequently, the catalyst demonstrates an exceptionally low overpotential of only 5.7 mV at 10 mA cm-2 in acidic media, along with remarkable long-term stability. These findings provide valuable insights into designing highly efficient HER electrocatalysts for acidic environments based on hydrogen spillover mechanisms.
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