Publication: Performance comparison of solid oxide steam electrolysis cells with/without the addition of methane
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Issued Date
2016
Resource Type
File Type
application/pdf
ISSN
1968904
Other identifier(s)
2-s2.0-84965062174
Rights Holder(s)
Scopus
Bibliographic Citation
Energy Conversion and Management. Vol 120, (2016), p.274-286
Suggested Citation
Patcharavorachot Y., Thongdee S., Saebea D., Authayanun S., Arpornwichanop A. Performance comparison of solid oxide steam electrolysis cells with/without the addition of methane. Energy Conversion and Management. Vol 120, (2016), p.274-286. doi:10.1016/j.enconman.2016.04.100 Retrieved from: https://hdl.handle.net/20.500.14740/5280
Abstract
Hydrogen is considered a clean energy carrier for the future. At present, the production of hydrogen via a solid oxide electrolysis cell is of interest because water is the only reactant used; however, hydrogen production through electrolysis technology is still costly due to high electrical energy consumption. To reduce this energy demand, an addition of methane to the anode side of the solid oxide electrolysis cell, where it behaves like the anode side of the solid oxide fuel cell and generates heat and electricity to accomplish the electrolysis process, is one interesting method. In this study, modeling of the solid oxide fuel-assisted electrolysis cell is performed based on an electrochemical model to analyze the performance of the electrolyzer with/without the addition of methane in terms of the power input and the energy efficiency. In addition, the effect on the electrolyzer cell by key operating parameters, such as current density, steam fraction, steam-to-carbon ratio, temperature, pressure, steam utilization and fuel utilization, is presented. The simulation analysis shows that the performance of the solid oxide fuel-assisted electrolysis cell is higher than that of conventional solid oxide electrolysis cell, as it requires a lower power input. Furthermore, it is possible to run the solid oxide fuel-assisted electrolysis cell without an external electrical energy input. © 2016 Elsevier Ltd. All rights reserved.
Subject(s)
Anodes
Carbon
Electrodes
Electrolysis
Electrolytic cells
Energy efficiency
Energy utilization
Fuel cells
Hydrogen production
Methane
Models
Regenerative fuel cells
Steam
Electrical energy consumption
Electrochemical modeling
Electrolysis process
Operating parameters
Performance comparison
Production of hydrogen
Steam-to-carbon ratio
Theoretical analysis
Solid oxide fuel cells (SOFC)
Carbon
Electrodes
Electrolysis
Electrolytic cells
Energy efficiency
Energy utilization
Fuel cells
Hydrogen production
Methane
Models
Regenerative fuel cells
Steam
Electrical energy consumption
Electrochemical modeling
Electrolysis process
Operating parameters
Performance comparison
Production of hydrogen
Steam-to-carbon ratio
Theoretical analysis
Solid oxide fuel cells (SOFC)