MCFC - Molten Carbonate Fuel Cells Portal Page

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Molten carbonate fuel cells (MCFC’s) have a molten carbonate electrolyte (usually sodium or lithium), are suited for large-scale stationary Combined Heat and Power, and operate on hydrocarbon fuels including: natural gas, biogas, synthesis gas (syngas), methane and propane.

Molten Carbonate Fuel Cell - Source:  http://www.eere.energy.gov/hydrogenandfuelcells/fuelcells/fc_types.htmlHow it Works

A major advantage of MCFC’s is that non-expensive catalysts can be used, in conjunction with a variety of fuels. Due to high temperatures and long start-up times, MCFC’s are unsuitable for domestic applications. There is considerable potential for multi-megawatt applications

MCFC’s work very differently from most other types of fuel cells, and cannot operate on pure Hydrogen alone. High temperatures prevent the need for an external reformer, however high temperatures also enhance corrosion and catalyse the breakdown of components. MCFC's operate around 650°C with an electrical efficiency of around 50% - rising to 85% with cogeneration

Chemical Equations:

Anode Reaction: CO32- + H2 »» H2O + CO2 + 2e-
Cathode Reaction: CO2+ ½O2 + 2e- »» CO32-

Image source - http://www.eere.energy.gov/hydrogenandfuelcells/fuelcells/fc_types.html

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