Fractional Order Elements Simulation

Hi, I'm working on Fuel Cell stacks integrated with boost converters. How can I simulate a double layer capacitor in the below figure? This is the equivalent circuit of one FC cell.

Answer 1

[Sabin]

Check out the Supercapacitor block in simscape Electrical:

https://uk.mathworks.com/help/sps/ref/supercapacitor.html