1. All-solid-state, flexible, ultrahigh performance supercapacitors based on the Ni-Al LDH-rGO electrodes.
- Author
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Zardkhoshoui, Akbar Mohammadi and Hosseiny Davarani, Saied Saeed
- Subjects
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NICKEL-aluminum alloys , *SUPERCAPACITOR electrodes , *SOLID state chemistry , *ELECTROPLATING , *ENERGY density - Abstract
In this work, we investigate the application of Ni-Al LDH-rGO composite directly synthesized on nickel foam by a low cost and facile CV electrodeposition method as a new electrode for all-solid-state flexible supercapacitors. Due to the synergistic effects between the Ni-Al LDH and the graphene sheets, directly grown on the surface of Ni foam, the as prepared electrodes exhibit an ultrahigh specific capacitance of 2693.25 F g −1 at a current density of 2 A g −1 . When these electrodes are used in asymmetric (Ni-Al LDH-rGO//Fe 2 O 3 -rGO) and symmetric (Ni-Al LDH-rGO//Ni-Al LDH-rGO) all-solid-stat supercapacitors, the as-prepared devices show excellent flexibility with a maximum specific capacitance and energy density of 214.4 F g −1 and 76.23 Wh Kg −1 for asymmetric device, and 412.30 F g −1 and 36.65 Wh Kg −1 for symmetric device. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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