LiAlO2-LiNaCO3 Composite Electrolyte for Solid Oxide Fuel Cells
2011 (English)In: Journal of Nanoscience and Nanotechnology, ISSN 1533-4880, Vol. 11, no 6, 5402-5407 p.Article in journal (Refereed) Published
This paper reports a new approach to develop functional solid oxide fuel cells (SOFC) electrolytes based on nanotechnology and two-phase nanocomposite approaches using non-oxygen ion or proton conductors, e.g., lithium aluminate-lithium sodium carbonate, with great freedom in material design and development. Benefited by nanotechnology and nanocomposite technology, the lithium aluminate-lithium sodium carbonate two-phase composite electrolytes can significantly enhance the material conductivity and fuel cell performance at low temperatures, such as 300 degrees C-600 degrees C compared to non-nano scale materials. The conductivity mechanism and fuel cell functions are discussed to be benefited by the interfacial behavior between the two constituent phases in nano-scale effects, where oxygen ion and proton conductivity can be created, although there are no intrinsic mobile oxygen ions and protons. It presents a new scientific approach to design and develop fuel cell materials in breaking the structural limitations by using non-ionic conductors on the desired ions i.e., proton and oxygen ions, and creating high proton and oxygen ion conductors through interfaces and interfacial mechanism.
Place, publisher, year, edition, pages
2011. Vol. 11, no 6, 5402-5407 p.
Two-Phase, Low Temperature (300-600 degrees C), Proton, Oxygen Ion Conduction
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-35612DOI: 10.1166/jnn.2011.3784ISI: 000291568100107ScopusID: 2-s2.0-84861151902OAI: oai:DiVA.org:kth-35612DiVA: diva2:429657
QC 20110705 3rd International Meeting on Developments in Materials, Processes and Applications of Emerging Technologies (MPA-2009), Manchester, ENGLAND, 20092011-07-052011-07-042012-03-22Bibliographically approved