Nanowire architectured porous bimetallic transition metal oxides for high performance hybrid supercapacitor applications: Nanowire-like bimetallic transition metal oxides for supercapacitor

Periyasamy Sivakumar, Min Gyu Jung, Chellan Justin Raj, Jeong Won Park, Ho Seok Park, Hyun Jung

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The electrochemical performance of the Faradaic battery-type binary metal oxide electrodes is dependent on the desirable architecture and the optimal cationic ratio. Herein, we report one-dimensional nanowire-like bimetallic spinel NixCo3-xO4 (NCO) electrode materials for high performance hybrid supercapacitor (HSC) applications. This unique nanowire architecture is beneficial for providing abundant exposed active sites onto the large accessible surface area, which results in facilitating ion transporting pathways. Remarkably, the optimal NCO electrode with the ratio of Ni/Co of 1 to 1 (NCO11) achieves the maximum specific capacitance of 1033 F g−1 at 1 A g−1 and the excellent rate capability of 74.55% at 30 A g−1, far exceeding those of their single counterparts. Furthermore, the as-assembled HSCs integrating NCO11 and AC electrodes deliver large energy and power densities of 41.54 W h kg−1 and 44.95 kW kg−1 with excellent cyclic retention (96.12%).

Original languageEnglish
Pages (from-to)18091-18102
Number of pages12
JournalInternational Journal of Energy Research
Volume45
Issue number12
DOIs
StatePublished - 10 Oct 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 John Wiley & Sons Ltd.

Funding

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) of Korea, South Korea funded by the Ministry of Education (No. NRF‐2016R1D1A1B01009640).

FundersFunder number
Ministry of EducationNRF‐2016R1D1A1B01009640
National Research Foundation of Korea

    Keywords

    • energy storage
    • hybrid supercapacitor
    • nanoarchitecture
    • nanowire
    • nickel cobaltite

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