Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 102, 2016, Issue in Progress
Previous Article Next Article

Nanoporous gold–copper oxide based all-solid-state micro-supercapacitors

Author affiliations

Abstract

The rapid growth of miniaturized electronic devices has increased the demand for energy storage devices with small dimensions. Micro-supercapacitors have great potential to supplement or replace batteries and electrolytic capacitors for a wide range of applications. Micro-supercapacitor can be fabricated with micro-electronic devices for efficient energy storage unit. However, the lower energy densities of micro-supercapacitors are still a bigger challenge to its application in micro devices. In this paper, we report all-solid-state nanoporous gold (NPG)–copper oxide (CuO) based micro-supercapacitor prepared using a simple fabrication process. In this process, first NPG interdigital patterns were developed by using a simple annealing and dealloying procedure, and then CuO was electrodeposited on NPG interdigital microelectrodes. The nanoporous gold substrate provides good electronic/ionic conductivity with high intrinsic surface area for the electrodeposition of CuO, which forms a novel hybrid electrode. The NPG–CuO micro-supercapacitor exhibits maximum areal capacitance 26 mF cm−2, maximum specific energy 3.6 μW h cm−2 and maximum specific power 646 μW cm−2. NPG–CuO micro-supercapacitors show excellent cyclic stability with 98% capacitance retention after 10 000 cycles.

Graphical abstract: Nanoporous gold–copper oxide based all-solid-state micro-supercapacitors

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 04 Aug 2016, accepted on 15 Oct 2016 and first published on 17 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA19744B
Citation: RSC Adv., 2016,6, 100467-100475
  •   Request permissions

    Nanoporous gold–copper oxide based all-solid-state micro-supercapacitors

    B. K. Singh, A. Shaikh, S. Badrayyana, D. Mohapatra, R. O. Dusane and S. Parida, RSC Adv., 2016, 6, 100467
    DOI: 10.1039/C6RA19744B

Search articles by author