A high activity cathode of Sm0.2Ce0.8O1.9 decorated Mn1.5Co1.5O4 using ion impregnation technique within a solid oxide fuel cell system.
- Resource Type
- Article
- Authors
- Cheng, Jihai; Qian, Weixing; Wang, Pan; Tian, Changan
- Source
- Solid State Sciences. Sep2022, Vol. 131, pN.PAG-N.PAG. 1p.
- Subject
- *SOLID oxide fuel cells
*MICROBIAL fuel cells
*FUEL systems
*CATHODES
*ENERGY conversion
*ENERGY storage
*FUEL cells
- Language
- ISSN
- 1293-2558
Solid oxide fuel cell (SOFC) is an electrochemical device for sustainable energy storage and conversion. This paper investigates the improvement of electrochemical performance by decorating Mn 1.5 Co 1.5 O 4 (MCO) surface with Sm 0.2 Ce 0.8 O 1.9 (SDC) using ion impregnation technique. X-ray diffraction (XRD) shows that SDC is chemically compatible with MCO. Microstructure and electrochemical performances of SDC impregnating MCO materials have been studied. The area specific resistance (ASR) of SDC impregnating MCO composite cathodes is 1.63 Ω cm2 at 700 °C, lower than 5.23 Ω cm2 of MCO-SDC composite cathodes prepared by mechanical blending. The single fuel cell used SDC impregnating MCO composite cathode, SDC electrolyte and Ni/SDC anode shows the maximum power density of 366 mW cm−2 at 700 °C, it is significantly higher than that of MCO-SDC prepared by mechanical blending. The results indicate that ion impregnation method could promote the electrochemical performances of MCO cathodes more efficiently comparing with traditional mechanical blending method. [Display omitted] • Novel cathode material of Sm 0.2 Ce 0.8 O 1.9 decorated Mn 1.5 Co 1.5 O 4 was investigated. • Effect of SDC additives on electrical properties was studied. • Ion impregnation method could promote the electrochemical performances of MCO. • Impregnation of SDC can increase the peak power density for the single fuel cells. [ABSTRACT FROM AUTHOR]