Performance of conducting polymer-based electrochemical capacitors

3 Performance of conducting polymer-based electrochemical capacitors 

In order to avoid the problems associated with the instability of the n-doping process of the polymer, it has been proposed to replace the n-doped polymer at the negative electrode with a carbon electrode to form the so-called hybrid capacitor [22, 33, 40]. Such hybrid capacitors with a p-doped polythiophene derivative as the positive electrode and activated carbon as the negative electrode were found to outperform double-layer carbon capacitors in terms of specific power while maintaining good performance cyclability over 10000 cycles [40]. Another asymmetric hybrid capacitor has been built using a lithium titanate (Li4Ti50i2) intercalation anode, instead of a carbon electrode and PFPT electrode [35]. 

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