Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance.

ABSTRACT: Polypyrrole/expanded graphite (PPy/EG) nanohybrids, with a hierarchical structure of a three dimensional EG framework with a thick PPy coating layer, have been synthesized via a vacuum-assisted intercalation in situ oxidation polymerization method. In the synthesis, pyrrole monomers were intercalated into the irregular pores of EG with the assistance of a vacuum pump. Subsequently, the intercalated pyrrole monomers assembled on both sides of the EG nanosheets and formed PPy by an in situ polymerization method. As electrode materials, the typical PPy/EG10 sample with an EG content of 10% had a high specific capacitance of 454.3 F g^-1 and 442.7 F g^-1 (1.0 A g^-1), and specific capacitance retention rate of 75.9% and 73.3% (15.0 A g^-1<

SUBMITTER: Wang J 

PROVIDER: S-EPMC9067312 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature