Related Experiment Video
Updated: Jan 24, 2026
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Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
Published on: September 20, 2012
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B-Site Fe-Co-Ni Triple Doping for High-Performance Oxygen Electrodes in Industrial-sized Reversible Solid Oxide Cells
Bin Li1,2, Hao Xiong1, Guangying Chen3
1Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, China.
Small (Weinheim an Der Bergstrasse, Germany)
|January 23, 2026
Summary
A new perovskite oxide, LCFNC, enhances oxygen electrodes for reversible solid oxide cells (RSOCs). It offers improved activity, stability, and thermal expansion matching, enabling efficient industrial-scale RSOC applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Conversion and Storage
Background:
- Oxygen electrodes in reversible solid oxide cells (RSOCs) face challenges including low catalytic activity, poor stability, and thermal expansion coefficient (TEC) mismatch with electrolytes.
- Developing advanced electrode materials is crucial for improving RSOC performance and enabling practical applications.
Purpose of the Study:
- To design and synthesize a novel perovskite oxide, La0.6Ca0.4Fe0.8Ni0.1Co0.1O3-δ (LCFNC), for enhanced oxygen electrode performance in RSOCs.
- To investigate the synergistic doping effects on LCFNC's catalytic activity, stability, and thermal compatibility.
- To evaluate the performance of LCFNC in both fuel cell and electrolysis modes, including industrial-scale devices.
Main Methods:
- Multi-element B-site synergistic doping strategy was employed to synthesize the novel perovskite oxide LCFNC.
- Systematic characterization of LCFNC's structural, thermal, and electrochemical properties.
- Full-cell performance testing in fuel cell and electrolysis modes, including stability assessments and industrial-scale device evaluation.
Main Results:
- LCFNC exhibits suppressed TEC (12.7 × 10-6 K-1 with GDC), ensuring excellent electrolyte compatibility.
- Synergistic doping created ternary active centers, enhancing surface oxygen vacancy concentration and catalytic activity.
- Achieved peak power density of 1.60 W·cm-2 (FC mode) and 1.82 A·cm-2 at 1.3 V (electrolysis mode) at 800°C.
- Demonstrated exceptional stability over 100 h electrolysis and 24 reversible cycles.
- Industrial-sized RSOCs (15 × 15 cm2) delivered 64 W (FC mode) and 105 A (electrolyzer mode) at 800°C.
Conclusions:
- Multi-element B-site doping is an effective strategy for developing high-performance oxygen electrode materials for RSOCs.
- LCFNC offers a promising solution for advancing the practical application of high-performance RSOCs due to its enhanced activity, stability, and compatibility.
- The study provides a mechanistic understanding and design principle for future oxygen electrode material development.
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