Volume 46, Issue 12 pp. 17043-17055
RESEARCH ARTICLE

Impact of oxygen-defects induced electrochemical properties of three-dimensional flower-like CoMoO4 nanoarchitecture for supercapacitor applications

Periyasamy Sivakumar

Periyasamy Sivakumar

Advanced Functional Nanohybrid Material Laboratory, Department of Chemistry, Dongguk University Seoul-Campus, Seoul, Republic of Korea

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C. Justin Raj

C. Justin Raj

Physics Division, School of Advanced Sciences, Vellore Institute of Technology (VIT), Chennai Campus, Chennai, India

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Loganathan Kulandaivel

Loganathan Kulandaivel

Advanced Functional Nanohybrid Material Laboratory, Department of Chemistry, Dongguk University Seoul-Campus, Seoul, Republic of Korea

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JeongWon Park

JeongWon Park

Advanced Functional Nanohybrid Material Laboratory, Department of Chemistry, Dongguk University Seoul-Campus, Seoul, Republic of Korea

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Hyun Jung

Corresponding Author

Hyun Jung

Advanced Functional Nanohybrid Material Laboratory, Department of Chemistry, Dongguk University Seoul-Campus, Seoul, Republic of Korea

Research Center for Photoenergy Harvesting & Conversion Technology, Dongguk University Seoul-Campus, Seoul, Republic of Korea

Correspondence

Hyun Jung, Advanced Functional Nanohybrid Material Laboratory, Department of Chemistry Dongguk, University Seoul-Campus, Jung-gu, Seoul 04620, Republic of Korea.

Email: [email protected]

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First published: 10 July 2022
Citations: 14

Funding information: National Research Foundation of Korea, Grant/Award Number: NRF-2016R1D1A1B01009640

Summary

The rational strategy to design the well-ordered morphology of the metal oxides with defective engineering and tailoring them into specific electrode fabrication can significantly improve their electrochemical properties for high-performance energy storage systems. Herein, we adopted an effective strategy to introduce oxygen-defect into the well-ordered three-dimensional flower-like CoMoO4 nanoarchitecture. The Co-Mo precursor leads to the introduction of oxygen-defects into the CoMoO4 (rCMO) nanoarchitecture during the heat-treatment under an oxygen-controlled environment (argon). The oxygen-defects in the material could facilitate abundant electroactive sites and intrinsically enhance the conductivity and supercapacitor performance. The oxygen-defect CoMoO4 (rCMO) exhibits a specific capacity of 531 mAh g−1 at a current density of 1 A g−1 compared to the pristine CoMoO4 (CMO; ambient atmosphere) of 322 mAh g−1 under the same current density. Meanwhile, the fabricated hybrid supercapacitor (HSC) of rCMO//AC provides a maximum specific capacitance of 159 F g−1. Further, it distributes an energy density of 49.87 Wh kg−1 at the power density of 845.45 W kg−1 with an excellent cyclic life of ~91.03% over 10 000 cycles.

DATA AVAILABILITY STATEMENT

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

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