Characterization of infiltrated (La0.75Sr0.25)0.95MnO3 as oxygen electrode for solid oxide electrolysis cells

Journal Article · · International Journal of Hydrogen Energy

DOI:https://doi.org/10.1016/j.ijhydene.2010.03.049· OSTI ID:1064735

Yang, C.; Jin, C.; Coffin, A.; Chen, Fanglin

Porous strontium doped lanthanum manganite (LSM)-yttria-stabilized zirconia (YSZ) composite has been made by an impregnation method as oxygen electrodes for solid oxide electrolysis cells. X-ray diffraction and SEM results showed that LSM powders with well-crystallized perovskite phase uniformly distributed in the porous YSZ matrix. Impedance spectra and voltage-current density curves were measured as a function of absolute humidity at different temperatures to characterize the cell performance. The LSM infiltrated cell has an area specific resistance (ASR) of 0.20 Ω cm{sup 2} at 900 °C at open circuit voltage with 50% absolute humidity (AH), which is relatively lower than that of the cell with LSM-YSZ oxygen electrode made by a conventionally mixing method. Electrolysis cell with LSM infiltrated oxygen electrode has demonstrated stable performance under electrolysis operation with 0.33 A/cm{sup 2} and 50 vol.% AH at 800 °C.

• Research Organization: Energy Frontier Research Centers (EFRC); Heterogeneous Functional Materials Center (HeteroFoaM)
• Sponsoring Organization: USDOE SC Office of Basic Energy Sciences (SC-22)
• DOE Contract Number: SC0001061
• OSTI ID: 1064735
• Journal Information: International Journal of Hydrogen Energy, Journal Name: International Journal of Hydrogen Energy Journal Issue: 11 Vol. 35; ISSN 0360-3199
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
carbon sequestration
catalysis (heterogeneous)
charge transport
energy storage (including batteries and capacitors)
hydrogen and fuel cells
materials and chemistry by design
mechanical behavior
membrane
synthesis (novel materials)
synthesis (scalable processing)
synthesis (self-assembly)