2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 10: Mineral & Secondary Battery
| Editors: | Kongoli F, Silva AC, Arol AI, Kumar V, Aifantis K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 340 pages |
| ISBN: | 978-1-987820-33-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Infiltration of small amount of CuO to modify the catalytic property of the Cathode in solid oxide fuel cell
Chenlong Gao1; Yingjun Liu2; Shaojun Xie3; Yugao Sun3; Rumen Tomov1; Vasant Kumar1;1UNIVERSITY OF CAMBRIDGE, Cambridge, United Kingdom (Great Britain); 2UNIVERSITY OF CAMBRIDGE, Cambridge, Great Britain; 3, Huizhou, China;
Type of Paper: Regular
Id Paper: 563
Topic: 14
Abstract:
Infiltration of small amount of CuO into La0.6Sr0.4Co0.2Fe0.8O3 (LSCF)/ Ce0.1Gd0.9O2 (CGO) to modify the surface activity of the cathode has been conducted in this work. The ASR of LSCF/CGO at 500oC was significantly reduced by more than 5 times from 27.6Ωcm2 to 5.2Ωcm2 by the CuO infiltration. It has been found that the reduction of ASR may be attributed to the formation of La0.6Sr0.4Cu0.2Fe0.8O3 (LSCuF) or other Cu-containing oxides. However, this kind of composite is not stable which will degrade during aging. Also, Cu2+ will cause internal strain inside the lattice arising from the Jahn Teller effect. This will cause segregation of other elements, such as Sr, and as a consequence, the catalytic property becomes worse. More studies are needed to stabilize the CuO infiltrated cathode. Ability to produce infiltrated electrodes are relevant for energy devices ranging from fuel cells to batteries and supercapacitors.