Search
High-performance NdSrCo2O5+δ–Ce0.8Gd0.2O2-δ composite cathodes for electrolyte-supported microtubular solid oxide fuel cells
Abstract
NdSrCo2O5+δ (NSCO) is a perovskite with an electrical conductivity of 1551.3 S cm−1 at 500 °C and 921.7 S cm−1 at 800 °C and has a metal-like temperature dependence. This perovskite is used as the cathode material for Ce0.8Gd0.2O2-δ (GDC)-supported microtubular solid oxide fuel cells (MT-SOFCs). The MT-SOFCs fabricated in this study consist of a bilayer anode, comprising a NiO–GDC composite layer and a NiO layer, and a NSCO–GDC composite cathode. Three cell designs with different outer tube diameters, GDC thicknesses, and NSCO/GDC ratios are designed. The MT-SOFC with an outer tube diameter of 1.86 mm, an electrolyte thickness of 180 μm, and a 5NSCO–5GDC composite cathode presents the best performance. The flexural strength of the aforementioned cell is 177 MPa, which is sufficient to confer mechanical integrity to the cell. Moreover, the ohmic and polarization resistance values of the cell are 0.22 and 0.09 Ω cm2 at 700 °C, respectively, and 0.15 and 0.03 Ω cm2 at 800 °C, respectively. These results indicate that the NSCO-GDC composite exhibits high electrochemical activity. The maximum power densities of the cell at 700 and 800 °C are 0.46 and 0.67 W cm−2, respectively, exceeding those of existing electrolyte-supported MT-SOFCs with similar electrolyte thicknesses.
Citations
-
1 1
CrossRef
-
0
Web of Science
-
1 2
Scopus
Authors (5)
-
Sea-Fue Wang
- National Taipei University of Technology
-
Yung-Fu Hsu
- National Taipei University of Technology
-
Yi-Le Liao
- National Taipei University of Technology
-
Shih-Ting Huang
- National Taipei University of Technology
Cite as
Full text
full text is not available in portal
Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
no. 46,
pages 31778 - 31787,
ISSN: 0360-3199 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Wang S., Hsu Y., Liao Y., Huang S., Jasiński P.: High-performance NdSrCo2O5+δ–Ce0.8Gd0.2O2-δ composite cathodes for electrolyte-supported microtubular solid oxide fuel cells// INTERNATIONAL JOURNAL OF HYDROGEN ENERGY -Vol. 46,iss. 62 (2021), s.31778-31787
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ijhydene.2021.07.049
- Verified by:
- Gdańsk University of Technology
seen 119 times
Recommended for you
Characteristics of La 0.8 Sr 0.2 Ga 0.8 Mg 0.2 O 3-δ -supported micro-tubular solid oxide fuel cells with LaCo 0.4 Ni 0.6-x Cu x O 3-δ cathodes
- Y. Liu,
- S. Wang,
- Y. Hsu
- + 1 authors
Design and characterization of apatite La9.8Si5.7Mg0.3O26±δ-based micro-tubular solid oxide fuel cells
- S. Wang,
- Y. Hsu,
- P. Hsia
- + 2 authors
Characteristics of La0.8Sr0.2Ga0.8Mg0.2O3-delta -supported micro-tubular solid oxide fuel cells with bi-layer and tri-layer electrolytes
- Y. Liu,
- S. Wang,
- Y. Hsu
- + 1 authors
High-performance anode-supported solid oxide fuel cells with co-fired Sm0.2Ce0.8O2-δ/La0.8Sr0.2Ga0.8Mg0.2O3−δ/Sm0.2Ce0.8O2-δ sandwiched electrolyte
- S. Wang,
- H. Lu,
- Y. Hsu
- + 1 authors