Molten carbonate electrolyzer for synthetic fuel generation

In the transition to a CO2-neutral circular economy, innovative solutions for e-fuels production are imperative. This study delineates the potential of molten carbonate electrolysis, utilizing a reversible molten carbonate fuel cell technology, recognized for its efficacy in large-scale electrical power generation and CO2 capture, to steer a groundbreaking pathway to e-fuels production through molten carbon electrolyzer modality. By meticulously scrutinizing the rMCFC's electrochemical behavior under assorted thermal-flow parameters, we offer an incisive analysis of its operation in the electrolysis mode, thereby unveiling a promising avenue for high-efficiency gaseous fuel production through electrochemical reactions. The experimental study includes current-voltage assessments and electrochemical impedance spectroscopy analysis, providing an elucidative view of the cell's performance landscape. Moreover, SEM microscopy was employed in both pre- and post-mortem stages, facilitating a deep understanding of material degradation mechanisms. Our results not only enhance the contemporary comprehension of reversible cell operations but also delineate the pivotal operating parameters that are conducive to optimizing both fuel cell and electrolysis modes, signposting a highly promising route to efficient and sustainable e-fuels production for the future circular economy. This study stands as a critical milestone in harnessing the molten carbonate electrolysis technology as a corner stone on the roadmap towards achieving a high-efficiency e-fuels production ecosystem. • The experimental investigation of reversible MCFC is reported. • MCFC was tested under various temperature and flow in both modes. • The literature review on reported experimental data is discussed.