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Realizing a Robust High-Performance Ni-GDC Nanocomposite Anode for SOFCs by Self-Assembly of Reactive Cosputtered
Fuyuan Liang1, Yunpeng Su2, Peiru Zhou1
1School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, P. R. China.
Nano Letters
|March 5, 2025
Summary
This study presents a rapid method for creating durable solid oxide fuel cells (SOFCs) using nickel oxide-gadolinium-doped ceria (NiO-GDC) nanocomposites and thin-film electrolytes. The novel fabrication process yields high electrochemical performance and stability.
Area of Science:
- Materials Science
- Electrochemistry
- Chemical Engineering
Background:
- Solid oxide fuel cells (SOFCs) are promising for clean energy conversion.
- Developing efficient and durable SOFCs requires advanced fabrication techniques for key components like anodes and electrolytes.
- Nanostructured materials and thin-film technologies offer pathways to enhance SOFC performance.
Purpose of the Study:
- To develop a fast and scalable fabrication route for efficient and durable SOFCs.
- To investigate the performance benefits of NiO-GDC nanocomposite anodes and multilayer thin-film electrolytes.
- To optimize the single-step annealing process for fabricating full SOFCs.
Main Methods:
- Fabrication of NiO-GDC nanocomposite anodes via cosputtering of Ni and GdCe targets.
- Preparation of multilayer thin-film electrolytes by alternating sputtering of YZr and GdCe targets.
- Single-step annealing of the anode-electrolyte assembly with a perovskite cathode at 1000 °C.
Main Results:
- Successfully fabricated full SOFCs with heterostructure ceramic multilayers and in situ constructed NiO-GDC nanocomposite anodes.
- Achieved fully dense multilayer electrolytes.
- Demonstrated significantly enhanced electrochemical performance with a peak power density of 2.72 W cm⁻² at 800 °C.
- Observed no degradation during stability testing, preserving the anode nanostructure.
Conclusions:
- The developed fabrication route is fast, scalable, and effective for producing high-performance SOFCs.
- The NiO-GDC nanocomposite anode and optimized thin-film electrolyte contribute to superior electrochemical performance and durability.
- This approach offers a viable pathway for the commercialization of advanced SOFC technology.
