Abstract
Dense, yet porous, all-polymer thick paper electrodes are constructed by compression of PPy@nanocellulose composites. When used in symmetric supercapacitors, these electrodes yield a device volumetric energy density of 3.7 W h L−1as well as the highest volumetric specific capacitance (236 F cm−3) and areal capacitance (5.66 F cm−2) ever shown for conducting polymer-based electrodes.
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