The components of an electrode material are usually selected for each component to make complementary contributions to the desired or optimal performances of the electrode, such as charge storage capacity, conductivity to electrons and/or ions, structural stability, cost and etc. However, it is not necessarily true that a material with more components would be more advantageous than that with fewer. It depends on how one would like to balance the contributions in terms of, for example, performances, resources, environment and cost.

The components of an electrode material are usually selected for each component to make complementary contributions to the desired or optimal performances of the electrode, such as charge storage capacity, conductivity to electrons and/or ions, structural stability, cost and etc. However, it is not necessarily true that a material with more components would be more advantageous than that with fewer. It depends on how one would like to balance the contributions in terms of, for example, performances, resources, environment and cost.

I totally agree with Dr. Chen answer. He pointed out almost all aspects in his reply. The addition of components materials in the electrodes may (sometimes) be beneficial to improve the operating potential window and could enhance the charge storage capacity. On the other hand, the catalytic behavior of one component may promote the parasitic reactions in the setup under applied conditions and may deteriorate the overall performance of the supercapacitor. It is therefore a careful experimentation is required to optimize the concentration of additional components in the desired conditions. Cost is an important consideration, which is mostly neglected in the academic research and must be undertaken from commercial point of view.

Thank you so much George Zheng Chen sir and Kashif Mairaj Deen sir ...I am working on ternary composite of conducting polymer-carbon black-metal oxide. Metal oxide itself provides excellent specific capacitance values so as conducting polymers like polyaniline. My question is, what kinds of structural changes (structural changes of polyaniline) are brought by carbon black and metal oxides so that we are getting better results in comparison to the individual materials.

Tapas, you may be interested in this patent - I never published a scientific paper about what I assumed are the reasons why this combination performed so extremely well (because at that time, my partner Nissan Chemicals wanted to market this system, later they gave up and the topic was not interesting to me any more). Maybe it can help you and others.

Patent CAPACITOR ELECTRODE MATERIAL CONDUCTIVE POLYMER IN COLLOIDAL...

Dear Dr. Bernhard Wessling, thank you very much for this very valuable information (Patent). I truly recommend this and Mr. Das may follow this. Thanking you once again.