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Advantages and disadvantages of molten carbonate batteries in design

Return Listsource:Gratene date: 2022-06-17

Advantages and disadvantages of molten carbonate batteries in designMolten Carbonate Fuel Cell, referred to as MCFC. It is generally referred to as a second generation fuel cell because it is expected to follow the phosphoric acid fuel cell. The electrolyte of MCFC is usually a molten dibasic alkali metal carbonate of lithium or lithium sodium to LiAiO, a ceramic matrix, which has good conductivity at high temperatures.

MCFC is a high-temperature fuel cell, several potential advantages compared to a low temperature fuel cell. First, at the operating temperature of the MCFC, the reorganization of the fuel can be carried out inside the battery stack, which reduces system cost and improves efficiency; second, battery-reacted high temperature heat can be used in industrial processing or boilers Circulation; third, almost all fuel reforms produce CO, which can cause low temperature fuel cell electrode catalyst, but can be a fuel of MCFC.

The disadvantage of MCFC is that the corrosion resistance of the electrolyte is high in its operating temperature and the cathode needs to be continuously supplied.
CO: The supply has the following ways:
(1) The anode exhaust is circulated to the cathode. The C02 vulva cathode produced by the anode is usually reacted in the MCFC. This may be more complicated. However, the H2 or fuel gas without reaction can be converted to H2O and C0 ‘by passing an anode exhaust gas into a burner.

(2) After the anode exhaust is burned, mixed with the cathode intake. The gas from the fuel is again mixed with fresh air. This process is not complicated than other thermal fuel cells, as this process can also be used to preheat the reactant air, combustion unreacted fuel.

(3) CO from the battery stack, source. Co, the direct external supply is an alternative to the above two methods, which is very advantageous when there is a ready-made CO.
Other non-common methods have some devices, such as thin film separators, separating C to the anode gas and passing the cathode. The advantage of this method is that unreacted fuel gases can be re-entered into the anode or do other uses. 

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