Scandium Doping Effect on a Layered Perovskite Cathode for Low-Temperature Solid Oxide Fuel Cells (LT-SOFCs)

Jeong, Donghwi, Kim, Junyoung ORCID: 0000-0001-9831-6924, Kwon, Ohhun, Lim, Chaehyun, Sengodan, Sivaprakash, Shin, Jeeyoung and Kim, Guntae (2018) Scandium Doping Effect on a Layered Perovskite Cathode for Low-Temperature Solid Oxide Fuel Cells (LT-SOFCs). APPLIED SCIENCES-BASEL, 8 (11). p. 2217.

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Official URL: http://dx.doi.org/10.3390/app8112217

Abstract

<jats:p>Layered perovskite oxides are considered as promising cathode materials for the solid oxide fuel cell (SOFC) due to their high electronic/ionic conductivity and fast oxygen kinetics at low temperature. Many researchers have focused on further improving the electrochemical performance of the layered perovskite material by doping various metal ions into the B-site. Herein, we report that Sc3+ doping into the layered perovskite material, PrBaCo2O5+δ (PBCO), shows a positive effect of increasing electrochemical performances. We confirmed that Sc3+ doping could provide a favorable crystalline structure of layered perovskite for oxygen ion transfer in the lattice with improved Goldschmidt tolerance factor and specific free volume. Consequently, the Sc3+ doped PBCO exhibits a maximum power density of 0.73 W cm−2 at 500 °C, 1.3 times higher than that of PBCO. These results indicate that Sc3+ doping could effectively improve the electrochemical properties of the layered perovskite material, PBCO.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	perovskite, electrochemistry, solid oxide fuel cells, cathode material
Depositing User:	Symplectic Admin
Date Deposited:	09 May 2019 09:39
Last Modified:	19 Jan 2023 00:48
DOI:	10.3390/app8112217
Open Access URL:	https://doi.org/10.3390/app8112217
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3040392