Gold coated vertically aligned carbon nanotubes as electrode for electrochemical capacitors
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Date
2023-05-20
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Thin Solid Films, Elsevier Ltd
Abstract
In this work, gold (Au) films were deposited onto vertically aligned carbon nanotubes (CNTs) by Dc magnetron
sputtering method for use as super-capacitor electrodes. By so doing, we synthesize a porous Au deposit anchored
on the CNTs with a high apparent surface area. The structure and microstructure studies revealed that the
Au@CNTs have a porous nanostructure morphology. The porous Au/CNTs electrodes exhibit an a good areal
capacitance compared to state of art Au based electrode (25.6 mF cm-2 at 5 mV.s-1) and excellent cycling stability
(90% retention after 10.000 cycles) in 0.5 M H2SO4 aqueous solution. These results demonstrate the beneficial
use of CNTs to fabricate a porous Au deposit with improved electrochemical energy storage. In addition, these
porous structures can also be used as templates for another type of materials for electrochemical energy storage.
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