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Enhanced power density in solid oxide fuel cells using nickel-assisted gadolinium-doped ceria anodes
Nacer Badi1,2, Aashis S Roy3, Raghavendra Sagar4
1Thermal Management and Sustainability Research Laboratory, Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia.
Plos One
|June 27, 2025
Summary
This study fabricated a solid oxide fuel cell (SOFC) using Gadolinium-doped ceria anode, BaNb₄MoO₂₀ electrolyte, and Lanthanum strontium cobalt oxide cathode. The SOFC demonstrated promising performance, achieving power densities up to 0.184 W/cm² at 800°C.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Conversion
Background:
- Solid Oxide Fuel Cells (SOFCs) are advanced energy conversion devices.
- Development of efficient and stable materials is crucial for SOFC performance.
- Gadolinium-doped ceria (GDC), BaNb₄MoO₂₀ (BNMO), and Lanthanum strontium cobalt oxide (LSCO) are explored for SOFC components.
Purpose of the Study:
- To fabricate and characterize a novel SOFC.
- To evaluate the performance of GDC anode, BNMO electrolyte, and LSCO cathode.
- To investigate the electrochemical properties and power density of the fabricated SOFC.
Main Methods:
- Fabrication of SOFC using GDC anode, BNMO electrolyte, and LSCO cathode.
- Structural and morphological characterization using FTIR, XRD, and SEM.
- Electrochemical performance testing including DC conductivity, impedance spectroscopy (Nyquist plots), and power density measurements.
Main Results:
- LSCO cathode showed high conductivity (5.2 S/cm).
- Nyquist plots indicated charge transfer and grain boundary resistances.
- Voltage drops observed at 200 mA/cm² attributed to electrode-electrolyte interface resistance.
- Achieved power densities of 0.094-0.184 W/cm² across temperatures 500-800°C.
Conclusions:
- The fabricated SOFC with BNMO electrolyte demonstrates favorable performance.
- LSCO is a promising cathode material for SOFC applications.
- Further optimization of electrode-electrolyte interface is needed to improve voltage stability.
