Versatile origami micro-supercapacitors array as a wind energy harvester

The voltage and current output of the polypyrrole/graphene-based micro-supercapacitors (PPyG-MSCs) array on paper can be well-regulated by directly folding the paper, and the PPyG-MSCs are also easily assembled onto the wind energy appliance by pressing the electrodes onto the leaves of the windmill to utilize and store the wind energy.