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Related Experiment Video

Updated: Aug 30, 2025

Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems
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Heterointerface Effect in Accelerating the Cathodic Oxygen Reduction for Intermediate-Temperature Solid Oxide Fuel

Yu Meng1,2, Xiaofei Zhu1, Jiao Meng3

  • 1School of Chemistry and Life Science, Changchun University of Technology, Changchun, China.

Frontiers in Chemistry
|September 2, 2022
PubMed
Summary
This summary is machine-generated.

A new composite cathode oxide, Pr0.8Sr0.2Fe0.7Ni0.3O3-δ-Pr1.2Sr0.8Fe0.4Ni0.6O4+δ (PSFN113-214), enhances solid oxide fuel cell (SOFC) performance through heterointerface engineering, showing improved oxygen ion transport and stability.

Keywords:
composite cathodeelectrocatalytic activityheterointerfaceoxygen vacancysolid oxide fuel cell

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Conversion

Background:

  • Solid oxide fuel cells (SOFCs) require efficient cathode materials for optimal performance.
  • Developing novel composite oxides with enhanced oxygen ion conductivity and surface area is crucial for SOFC advancement.

Purpose of the Study:

  • To prepare and investigate a new composite cathode oxide, PSFN113-214, for SOFC applications.
  • To explore the effect of heterointerface engineering on the performance of the composite cathode.
  • To optimize the mixing ratio for maximum performance enhancement.

Main Methods:

  • Solid-state mixing method was used to synthesize the Pr0.8Sr0.2Fe0.7Ni0.3O3-δ-Pr1.2Sr0.8Fe0.4Ni0.6O4+δ (PSFN113-214) composite.
  • Heterointerface engineering was employed to enhance oxygen vacancy content and specific surface area.
  • Electrochemical performance, including polarization resistance and power density, was evaluated.

Main Results:

  • Mixing PSFN214 with PSFN113 formed a heterostructure, increasing oxygen vacancy content and specific surface area.
  • The optimal 5:5 mixing ratio exhibited the strongest interface effect, highest oxygen vacancy content, and largest specific surface area.
  • The PSFN113-214 (5:5) composite showed significantly reduced polarization resistance (0.029 Ω cm2) and increased maximum power density (0.699 W cm-2) compared to individual components.
  • Excellent long-term stability was demonstrated with a low voltage attenuation rate of 0.0352% h-1 after 100 hours.

Conclusions:

  • Heterointerface engineering in PSFN113-214 composite effectively enhances oxygen ion transport and electrochemical performance.
  • The optimized PSFN113-214 (5:5) composite is a promising cathode material for high-performance and stable SOFCs.