DC Field | Value | Language |
---|---|---|
dc.contributor.author | Do, Anh-Tuan | - |
dc.contributor.author | Lu, Xinyu | - |
dc.contributor.author | Guo, James | - |
dc.contributor.author | Pine, Thomas | - |
dc.contributor.author | Bae, Joongmyeon | - |
dc.contributor.author | Brouwer, Jack | - |
dc.date.accessioned | 2010-11-29T09:22:27Z | - |
dc.date.available | 2010-11-29T09:22:27Z | - |
dc.date.issued | 2008-05 | - |
dc.identifier.citation | ECS Transactions, Vol.13, No.26, pp.165-180 | en |
dc.identifier.issn | 1938-6737 | - |
dc.identifier.uri | http://hdl.handle.net/10203/20489 | - |
dc.description.abstract | As potential intermediate-temperature SOFC cathodes, perovskite composite cathode materials were evaluated in combination with a La0.8Sr0.2Ga0.8Mg0.2O3-δ (LSGM) electrolyte. Various cathode materials La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF), Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF), and Pr0.3Sr0.7Co0.8Fe0.2O3-δ (PSCF) were compounded with La0.8Sr0.2Ga0.8Mg0.1Co0.1O3-δ (LSGMC) as a mixed conducting composite element. All powders were synthesized by the glycine-nitrate process (GNP). XRD analysis found resistive phases of LaSrGaO4 and LaSrGa3O7 present in the calcined layer of composite cathodes on LSGM. A bulk ohmic resistance of 3.81 Ω·cm2 and an interfacial resistance value of 0.16 Ω were measured for LSCF/LSGMC composite cathode on LSGM substrate at 800ºC in air. Low-frequency secondary arcs in the impedance spectra of LSCF/LSGMC cathode coupled with low current density and low cathode porosity suggested possible mass transfer limitations. The LSCF/LSGMC composite electrode performed best at 800ºC (0.11 A/cm2 at 0.045 V overpotential) while the BSCF/LSGMC performed best at the lowest temperature investigated (0.1 A/cm2 at 700ºC and 0.04 V overpotential). | en |
dc.description.sponsorship | The authors acknowledge the financial support of the Fuel Cell Program of the United States Department of Defense. | en |
dc.language.iso | en_US | en |
dc.publisher | The Electrochemical Society | en |
dc.title | Electrochemical Investigation of LSGMC-Composite Cathodes on LSGM-Substrate | en |
dc.type | Article | en |
dc.identifier.doi | 10.1149/1.3050389 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.