Electrochemical properties of nanostructured lanthanum strontium manganite cathode fabricated by electrostatic spray deposition
- Title
- Electrochemical properties of nanostructured lanthanum strontium manganite cathode fabricated by electrostatic spray deposition
- Author
- 신동욱
- Keywords
- Nanostructured cathode; Electrostatic spray deposition (ESD); Lanthanum strontium manganite (LSM); Solid oxide fuel cells (SOFCs)
- Issue Date
- 2011-06
- Publisher
- Elsevier Science B.V., Amsterdam.
- Citation
- Solid state ionics,Vol.192, No.1 [2011],448-452
- Abstract
- Electrostatic spray deposition was applied to prepare nanoporous lanthanum strontium manganite (LSM) films with high specific surface area (37.34m 2 /g) for the cathode application in solid oxide fuel cell (SOFC). The electrochemical characteristics were investigated at a temperature range from 546 to 777 o C and oxygen partial pressure from 0.01 to 1.0atm. The diffusion of atomic oxygen and oxygen ion transfer from three-phase boundary to the YSZ electrolyte were found to be the rate-determining steps for oxygen reduction reaction on LSM cathode. The polarization resistance of the LSM prepared using electrostatic spray deposition decreased from 15 to 1.2Ωcm 2 with increasing temperature from 546 to 777 o C and the activation energy was 0.81eV. It was demonstrated that the ESD method offers a promising approach for the preparation of electrochemically active nanoporous layers, particularly applicable for solid oxide fuel cells.
- URI
- http://www.sciencedirect.com/science/article/pii/S0167273810002948?via%3Dihubhttp://hdl.handle.net/20.500.11754/66521
- ISSN
- 0167-2738
- DOI
- 10.1016/j.ssi.2010.05.050
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML