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An asymmetric conducting polymer/polyoxometalate (POM) supercapacitor was designed using polypyrrole/phosphomolybdic acid and poly(3,4-ethylenedioxythiophene)/phosphotungstic acid as electrode materials. Performance characteristics were measured by cyclic voltammetry and constant current discharge. Energy density and power density were increased by a factor of 3 and 50, respectively, over symmetric conducting polymer/POM systems.
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Suppes et al. (2010) studied this question.
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