Classification of Electrochemically Active Polymers

Gottesfeld and co-workers at Los Alamos National Laboratory proposed in 1994 a classification of conducting polymer-based electrochemical capacitors as schematically presented in Figure 15.6 [11], The first one is a symmetrical capacitor which involves the same p-dopable polymer for both electrodes and was called the Type I capacitor. Polypyrrole [11, 37, 47] and polyaniline [48] were commonly used as active electrode materials for the Type I capacitor. When the Type I capacitor is fully discharged, both electrodes are in a half-doped state. 

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