Pulse electrochemical synthesis of polypyrrole/graphene oxide@graphene aerogel for high-performance supercapacitor.

ABSTRACT: A novel electroactive polypyrrole/graphene oxide@graphene aerogel (PGO@GA) was synthesized for the first time by pulse electropolymerization. The off-time in this technique allows polypyrrole (PPy) to go through a more stable structural arrangement, meanwhile its electronic transmission performance is enhanced by immobilizing graphene oxide between PPy chains. Moreover, graphene aerogel provides a three-dimensional structure with high conductivity to protect PPy from swelling and shrinking during the capacitive testing. Under these synergistic effects, PGO@GA presents exceptional capacitive performances including high specific capacitance (625 F g^-1 at 1 A g^-1), excellent rate capability (keeping 478 F g^-1 at 15 A g^-1 with retention rate of 76.5%

SUBMITTER: Zhang E 

PROVIDER: S-EPMC9050804 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature