I have found the theoretical capacity values for cobalt ferrite given in mA h /g but I couldn't find the theoretical capacitance given in farads per gram.
I understand that capacitance involve a specified potential but I thought that there are reports of approximate theoretical capacitance of these ferrites in the same manner like is reported for example for manganese oxides (like in following works: http://onlinelibrary.wiley.com/doi/10.1002/chem.201303483/pdf , http://www.hindawi.com/journals/ijelc/2011/397685/ )