| Full text | |
| Author(s): |
Machado, Marina
;
Baiutti, Federico
;
Bernadet, Lucile
;
Morata, Alex
;
Nunez, Marc
;
Ouweltjes, Jan Pieter
;
Fonseca, Fabio Coral
;
Torrell, Marc
;
Tarancon, Albert
Total Authors: 9
|
| Document type: | Journal article |
| Source: | JOURNAL OF MATERIALS CHEMISTRY A; v. 10, n. 33, p. 9-pg., 2022-08-11. |
| Abstract | |
Electrochemical devices such as solid oxide fuel cells (SOFC) may greatly benefit from the implementation of nanoengineered thin-film multifunctional layers providing, alongside enhanced electrochemical activity, improved mechanical and long-term stability. In this study, an ultrathin (400 nm) bilayer of samarium-doped ceria and a self-assembled nanocomposite made of Sm0.2Ce0.8O1.9-La0.8Sr0.2MnO3-delta was fabricated by pulsed laser deposition and is employed as a functional oxygen electrode in an anode-supported solid oxide fuel cell. Introducing the functional bilayer in the cell's architecture results in a simple processing technique for the fabrication of high-performance fuel cells (power density 1.0 W cm(-2) at 0.7 V and 750 degrees C). Durability tests were carried out for up to 1500 h, showing a small degradation under extreme operating conditions of 1 A cm(-2), while a stable behaviour at 0.5 A cm(-2) (2.8% V-in kh(-1)). Post-test analyses, including scanning and transmission electron microscopy and electrochemical impedance spectroscopy, demonstrate that the nanoengineered thin film layers remain mostly morphologically stable after the operation. (AU) | |
| FAPESP's process: | 14/09087-4 - Studies on the use of bioethanol in proton exchange membrane and solid oxide fuel cells |
| Grantee: | Marcelo Linardi |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 19/04499-6 - Development of anodes with catalytic layers for direct ethanol solid oxide fuel cells |
| Grantee: | Marina Machado Livinalli |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 19/21159-4 - Optimization of functional layers for SOFC by PLD |
| Grantee: | Marina Machado Livinalli |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |
| FAPESP's process: | 17/11937-4 - A sustainable path to methane conversion by advanced electrochemical technologies |
| Grantee: | Fabio Coral Fonseca |
| Support Opportunities: | Research Grants - Research Centers in Engineering Program |