| Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2016) | |
| Energy Harvesting & Storage | Wednesday Sessions |
| Session EH-WeP |
| Session: | Energy Harvesting & Storage Poster Session |
| Presenter: | Youngjin Kwon, Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea |
| Authors: | Y.J. Kwon, Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea J.M. Bae, Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea |
| Correspondent: | Click to Email |
It has been increasing interest in hydrogen(H2) as an alternative energy carrier. Because the H2 has high energy density, pure emission and it is easy to be transported by using a pipeline. But H2 doesn’t exist on the earth as a fuel. For this reason, it must be generated. There are several ways of producing H2 such as by photocatalytic water splitting, gasification of biomass, solar thermochemical water splitting and water electrolysis driven by solar cell or wind turbine. Among these technologies, Solid oxide regenerative fuel cell(SORFC) is a practical and efficient method for the industrial field. High operating temperature improves the electrode kinetics and reduce the SORFC electrolyte resistance, leading to lower losses in cell performance.
Due to similarity to Solid oxide fuel cell(SOFC), advances have been made in the development of SORFC based on cell assemblies with structure nickel-yttria stabilized zirconia(Ni-YSZ) fuel electrode / YSZ electrolyte / lanthanum strontium manganite-YSZ(LSM-YSZ) air electrode. The previous study show that the performance discrepancies of the cell in operation between the electrolytic and galvanic modes could be varied, depending on the electrode materials. Moreover, the Ni-YSZ most widely used fuel electrode has several problems even though its great catalytic performance. One of them is degradation of the fuel electrode because of Ni particle’s redox reaction and agglomeration. Therefore it is necessary to develop an alternative fuel electrode material.
Double perovskite electrode material is one of the promising candidate for the fuel electrode of the SORFC because of its high catalytic performance and stability at SOFC mode. In this study, We studied on the Double perovskite Pr0.5Br0.5MnO3-δ(PBMO) as a fuel electrode material of SORFC. PBMO was infiltrated into the scaffold structure of the electrolyte, La0.8Sr0.2Ga0.85 Mg0.15O3-δ (LSGM) and synthesized at the low temperature because second phase generated when it annealed at high temperature. The Half cell test was conducted to investigate the electrochemical performance of the electrode material at the steam rich atmosphere.