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- W3199578667 endingPage "162052" @default.
- W3199578667 startingPage "162052" @default.
- W3199578667 abstract "• Hierarchical NiCo 2 O 4 /RGO electrode on nickel foam has been prepared by a simple strategy. • High surface area and porous characteristics offer more available active sites. • The assembled ASC device delivers an energy density as high as 49.6 W h kg -1 . • NiCo 2 O 4 /Au nanorod networks based flexible/transparent supercapacitor is developed. • Flexible/transparent supercapacitor shows high energy density of 1.17 mW h cm -2 at power density of 80 mW cm -2 . In this work, the incorporation of porous reduced graphene oxide (RGO) as support for nickel cobaltite and its strong influence on a structural directing agent is studied. It was found in experimental results that the RGO nanosheets, especially the porous carbon network would be favorable to serve as the nucleation sites for the growth of NiCo 2 O 4 nanorods. Importantly, the epoxy groups present in the porous RGO attract an aggregated NiCo 2 O 4 nanoparticle to form aggregated nanorod-like morphology through dangling bonds. The specific capacity of the NiCo 2 O 4 /RGO hybrid (606.6 C g -1 at 1 A g -1 ) is two times superior than that of NiCo 2 O 4 (282.6 C g -1 ) and the high-rate performance for NiCo 2 O 4 /RGO hybrid is 3.5 times better than that of NiCo 2 O 4 . An asymmetric supercapacitor constructed with NiCo 2 O 4 /RGO (positive electrode) and activate carbon (negative electrode) delivered a maximum energy density of 49.6 W h kg -1 and long cycle life. In addition, a flexible transparent supercapacitor device assembled with the NiCo 2 O 4 /RGO hybrid electrode achieved a large areal capacity (5.27 mC cm -2 at 75.5% transparency), high energy density (1.17 mW h cm -2 ) and outstanding mechanical flexibility." @default.
- W3199578667 created "2021-09-27" @default.
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- W3199578667 date "2022-01-01" @default.
- W3199578667 modified "2023-10-16" @default.
- W3199578667 title "Urchin-like porous NiCo2O4 nanostructure: Morphology control using porous reduced graphene oxide nanosheets for high performance flexible transparent energy storage devices" @default.
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- W3199578667 doi "https://doi.org/10.1016/j.jallcom.2021.162052" @default.
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