The Effective Capacitance of a Constant Phase Element with Resistors in Series

The power of energy storage devices is characterized by capacitance and the internal resistance. measured on an assumption that charges are stored at electrode interface electric double layer behaves like ideal capacitor. However, in most cases, not so a constant phase element (CPE) used instead capacitor to describe practical observations. Nevertheless, another problem with use CPE does give directly. Fortunately, few methods were suggested evaluate effective literature. those may be suitable for supercapacitors which modeled as equivalent circuit resistor connected series because time clearly studied. In this report, order study find its capacitor, AC DC utilized complementary manner. As result, constants domains compared digital simulation proper equation presented calculate supercapacitor, extended electrochemical system where faradaic ohmic processes accompanied imperfect charge accumulation process.