Two types of electrochemical supercapacitors have been developed in our group applying COPs: a) polyoxometalates and b) carbon nanotubes. The first type of materials makes use of the reversible redox chemistry of both COPs and polyoxometalates [ 35] which are known to suffer reversible reduction processes with a concomitant protonation, a mechanism which must be at work during cycling of the supercapacitor. The application of carbon nanotubes presents the advantage of high surface area and high conductivity [8] [ A brief review of our most recent results follows.

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