Reviewing the factors affecting regenerative molten carbonate fuel cells
by Pier Paolo Prosini
International Journal of Nuclear Hydrogen Production and Applications (IJNHPA), Vol. 2, No. 4, 2013

Abstract: To evaluate the possibility to use molten carbonate fuel cell technology for high temperature electrolysis, the factors affecting the electrode reactions have been examined by surveying the published literature. The literature results showed that H₂, CO₂ and CO evolved as cathode off-gases and O₂ as anode gas. At low polarisation, the discharge of oxide ions to O₂ was the only anodic process; increasing polarisation and current densities, the discharge of carbonate ions contributed to the anodic reaction and CO₂ was concurrently produced at the anode. Molten Li₂CO₃ at 850°C-900°C readily absorbed the produced CO₂ (the CO₂ concentration in the anode compartment was lower than 0.5%). In this condition, titanium cathode enhanced CO production. The co-production of CO represents a serious disadvantage to power a polymer electrolyte membrane fuel cell. On the other hand, the production of syngas could offer attractive applications such as synfuel production and carbon dioxide regeneration.

Online publication date: Sat, 12-Jul-2014

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