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- W2896937989 abstract "Flexible supercapacitor plays a progressively more important part in power source for smart electronic devices and how to enhance its energy density is the urgent issue to be addressed. Hence, a hybrid electrode of Polypyrrole@reduced graphene oxide hydrogel (PPy@rGOH) is synthesized via a combine hydrothermal treatment of GO solution to assemble hydrogel and subsequently in-situ electropolymerization preparation of PPy on the surface of graphene. Through controlling the time of electropolymerization, the resultant PPy@rGOH-20 s with high specific surface area exhibits an excellent specific capacitance of 340 F g-1 at a current density of 1 A g-1 and superior cycling stability of 87.4% capacitance retention after 10,000 charging/discharging cycles at 3 A g-1 in 1 M KNO3. The assembled flexible asymmetric supercapacitor (FASC) by employing the PPy@rGOH-20s as positive electrode and pure rGOH as negative electrode presents a maximum operational voltage window of 1.6 V and high energy density of 46.9 W h kg-1, which is higher than polymer/carbon-based supercapacitors previously reported." @default.
- W2896937989 created "2018-10-26" @default.
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- W2896937989 date "2019-02-01" @default.
- W2896937989 modified "2023-10-06" @default.
- W2896937989 title "Freestanding 3D Polypyrrole@reduced graphene oxide hydrogels as binder-free electrode materials for flexible asymmetric supercapacitors" @default.
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- W2896937989 doi "https://doi.org/10.1016/j.jcis.2018.10.044" @default.
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