Journal
SOLID OXIDE FUEL CELLS 15 (SOFC-XV)
Volume 78, Issue 1, Pages 3025-3037Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/07801.3025ecst
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- Fraunhofer-Gesellschaft
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Production of synthetic hydrocarbon fuels from co-electrolysis of steam/CO2 mixtures using renewable energy has been already presented as a promising solution to diminish environmental problems. The possibility to recycle CO2 into chemicals and value-added fuels helps to reduce the accumulation of atmospheric CO2 and realize the carbon neutral cycling of fuels. While the co-electrolysis is more complicated than steam electrolysis, the electrochemical performance of electrolyte supported cell with LSMM'/ScSZ and Ni/GDC electrodes was investigated over a wide range of operating conditions (SOEC as well as SOFC), varying the ratio of H2O:H-2 and CO2:CO, the operating temperature (750-850 degrees C) and current. The modified standard SOFC cell with optimized fuel and air electrodes was successfully tested for similar to 2400 hours at 803 degrees C under co-electrolysis conditions (H-2/H2O/CO2/CO mixture as fuel, j = -400 mA/cm(2)). The calculated linear power degradation rate over all durability test (similar to 2400 h) is about 0.4%/1,000 h.
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