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Updated: Jan 18, 2026
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Microfabrication of Chip-sized Scaffolds for Three-dimensional Cell cultivation
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Micro-Grooving and Oxygen Vacancy Engineering Synergistically Enable Robust Interfaces in Protonic Ceramic Cells
Xiaoqing Si1, Yuewen Xue1, Chunyu Yuan2
1State Key Laboratory of Precision Welding & Joining of Materials and Structure, Harbin Institute of Technology, Harbin, 150001, China.
Small (Weinheim an Der Bergstrasse, Germany)
|September 12, 2025
Summary
Femtosecond laser processing of protonic ceramic fuel cell (PCFC) electrolytes improves performance. This method enhances the cathode-electrolyte interface, significantly boosting power density and stability.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Conversion
Background:
- Protonic ceramic fuel cells (PCFCs) offer high efficiency but suffer from poor cathode-electrolyte interfaces.
- This interfacial resistance limits practical application and overall performance.
Purpose of the Study:
- To enhance the cathode-electrolyte interface in PCFCs.
- To improve the performance and stability of PCFCs using a novel surface modification technique.
Main Methods:
- Femtosecond laser processing was applied to BaCe0.7Zr0.1Y0.2O3-δ (BCZY) electrolytes.
- Surface modifications included inert layer removal, micro-groove creation, nano-protrusion formation, and generation of oxygen vacancies.
Main Results:
- Laser treatment reduced interfacial polarization resistance by approximately 50% in symmetrical cells.
- Single cells with treated electrolytes showed nearly doubled peak power densities.
- Enhanced sintering and a robust interface were achieved.
Conclusions:
- Femtosecond laser processing is an effective strategy for engineering PCFC electrode-electrolyte interfaces.
- This approach significantly boosts PCFC performance and stability, paving the way for practical applications.
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