Self assembly of graphene aerogel on copper wire for wearable fiber shaped supercapacitors
Abstract Wearable wire shaped supercapacitors were fabricated exploiting an innovative graphene aerogel self assembly procedure on copper wire. The innovative aspect of the proposed procedure lies in the employment, for the first time to the best of our knowledge, of a hydrothermal graphene synthesis for an in situ coverage of a non planar substrate. Specific capacitance per unit length was calculated to be about 12,5 mF/cm. The device can sustain repeated charge discharge and bending cycles without suffering significant deterioration of specific capacitance. The combination of graphene aerogel self coating method, flexibility and superior electrochemical performance makes the proposed device a suitable power source for e textile applications.