Premium
Dahlia‐liked Carbon Nanohorns Decorated Graphene/Polyaniline Nanocomposite and Its Derived Nitrogen‐doped Carbon for High‐performance Supercapacitor
Author(s) -
Lü QiuFeng,
Wang Shuhao,
Zhou Jing,
Duan FangFang,
Yang Haijun,
Liu Rui
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201901553
Subject(s) - supercapacitor , graphene , dahlia , polyaniline , materials science , nanocomposite , carbon fibers , polymerization , oxide , interfacial polymerization , chemical engineering , nanotechnology , capacitance , monomer , composite number , composite material , electrode , polymer , chemistry , metallurgy , botany , engineering , biology
A dahlia‐liked carbon nanohorns (CNHs) decorated graphene/polyaniline (CGP) nanocomposite was prepared via in situ chemical oxidation and hydrazine hydrate reducing. Firstly, dahlia‐liked CNHs decorated graphene oxide/polyaniline (CGOP) composite was synthesized from the polymerization of aniline monomers on the surface of graphene oxide with spherical dahlia‐liked carbon nanohorns as spacers. Then, the CGP composite was obtained by reducing CGOP using hydrazine hydrate. CGP exhibited a uniform three‐dimensional nanostructure because long cone‐shaped tips of dahlia‐liked CNHs spacers can boost the isolation effect of the nanocomposite. The maximum specific capacitance of CGP was up to 769 F g −1 at a current density of 1 A g −1 when served as supercapacitors electrodes. Importantly, CGP also performed a good rate capability and high stability. Furthermore, a CGP‐based asymmetric supercapacitor was assembled and delivered an energy density of 19.1 Wh kg −1 at a power density of 1504.9 W kg −1 .