Related Experiment Video
Updated: May 5, 2026

Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
Electronic Modulation via a Pd-CeO2 Heterointerface for Superior Alkaline Hydrogen Oxidation
Minhui Zhong1, Qingzhen Xu1, Wenhai Xu1
1Department of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.
Developing advanced catalysts for anion exchange membrane fuel cells (AEMFCs) is crucial. This study engineered a palladium-ceria/nitrogen-doped carbon (Pd-CeO2/NC) catalyst, significantly boosting hydrogen oxidation reaction (HOR) kinetics and stability.
Area of Science:
- Electrochemistry
- Materials Science
- Catalysis
Background:
- Sluggish hydrogen oxidation reaction (HOR) kinetics in alkaline media hinder anion exchange membrane fuel cell (AEMFC) performance.
- Optimizing adsorption of hydrogen (*H) and hydroxide (*OH) intermediates is key for efficient HOR catalysis.
Purpose of the Study:
- To engineer a novel catalyst with a heterointerface for synergistic optimization of *H and *OH adsorption.
- To investigate the electronic effects of a Pd-CeO2 heterointerface on HOR activity.
Main Methods:
- Fabrication of a Pd-CeO2/NC catalyst via heterointerface construction.
- Utilized spectroscopic studies and theoretical calculations to analyze electronic structure and intermediate adsorption.
- Evaluated catalyst performance through electrochemical measurements, including exchange current density and CO tolerance.
Main Results:
- The Pd-CeO2/NC catalyst demonstrated optimized *H and *OH adsorption by downshifting the Pd d-band center.
- Achieved an exceptional exchange current density of 3.66 mA cm-2, double that of commercial Pt/C.
- Exhibited excellent long-term stability and high activity with 1000 ppm CO tolerance.
Conclusions:
- Metal-oxide heterointerface engineering effectively regulates electronic structures for multi-intermediate optimization.
- The Pd-CeO2/NC catalyst presents a promising design principle for advanced alkaline HOR electrocatalysts in AEMFCs.
More Related Videos
06:39Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
Published on: October 20, 2023
10:57Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Related Concept Videos
Electrochemical Systems
Electrochemical Cells
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide