Excellent performance MWCNTs-GONRs/Ni(OH)(2) electrode for outstanding supercapacitors
摘要:
Due to the unconventional properties of MWCNTs-GONRs (multiwalled carbon nanotubes-graphene oxide nanoribbons), we have tried to use it as a carbon resource for supercapacitors. MWCNTs-GONRs/Ni(OH)(2) electrode was obtained by hydrothermal method. Velvet alpha-Ni(OH)(2) was prepared above NF (nickel-foam) loaded with MWCNTs-GONRs. This layered design can effectively promote the diffusion of ions and increase the active site for MWCNTs-GONRs/Ni(OH)(2) electrode, thus enhancing the electrochemical performance. The electrode exhibits extraordinary electrochemical performances in electrochemical testing, such as supernal specific capacitance (1713.2 F g(-1)) and prominent working time. In addition, supercapacitors was assembled with MWCNTsGONRs/Ni(OH)(2) and active carbon as materials. Which represents a prominent energy density (41.23 Wh kg(-1)), high power (6.80 kW kg(-1)) and prominent cycling stability property (95.18%, 3000 times). The electrode prepared in this work provides a clue to enlighten people for energy storage.
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年份:
2019
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