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Electrochemical evaluation of Pr1.85M0.15NiO4+x (M=Ba, Sr, Ca) cathodes for protonic ceramic fuel cells.
- Source :
-
Ceramics International . Jun2024:Part A, Vol. 50 Issue 11, p19437-19445. 9p. - Publication Year :
- 2024
-
Abstract
- Pr 1.85 M 0.15 NiO 4+x (M represents Ba, Sr, or Ca) materials were prepared and evaluated as cathodes for protonic ceramic fuel cells (PCFCs). Compared with the Sr and Ba doping methods, the Ca-doping approach slightly enhanced the generation of interstitial oxygen and the surface catalytic activity in Pr 2 NiO 4. Furthermore, Ca-doping decreases the distance between O atoms in the lattice compared with the Sr and Ba-doped Pr 2 NiO 4 , facilitating the movement of charge carriers. Consequently, PCFCs employing Ca-doped Pr 2 NiO 4 cathodes achieve a much greater power density of 1279 mW cm−2 at 700 °C compared to fuel cells employing Sr-doped or Ba-doped Pr 2 NiO 4 cathodes. Furthermore, a PCFC employing a Ca-doped Pr 2 NiO 4 cathode exhibited excellent long-term stability under working conditions and operated continuously for over 280 h without any discernible deterioration. These results indicate that the Ca-doped Pr 2 NiO 4 cathode is a stable and effective candidate for PCFCs. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SOLID oxide fuel cells
*FUEL cells
*CATHODES
*DOPING agents (Chemistry)
Subjects
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 50
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 176720461
- Full Text :
- https://doi.org/10.1016/j.ceramint.2024.03.029