Solid Oxide Fuel Cell Maximum Voltage

7 Solid Oxide Fuel Cell Maximum Voltage 

In a fuel cell work is done in the isothermal process by ions which flow from one side of the electrolyte to the other. The flow of ions is possible due to their concentration gradient occurring on both sides of the cell. In the case of SOFC, the gradient is equivalent to the pressure differential, which means isothermal expansion. Maximum work during isothermal expansion is defined by the following equation [3, 4] (see Sect. 2.1.3 for details)  

In order to determine the maximum work to be achieved in SOFC, the number of moles performing this work and the pressure ratio must be determined. 

The current generated in the fuel cell is linked to the number of ions passing through the electrolyte, which carries out the work. Using Faraday s law equation, the maximum fuel cell voltage can be derived  

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