Sonication-supported synthesis of cobalt oxide assembled on an N-MWCNT composite for electrochemical supercapacitors via three-electrode configuration

Rajendra Kumar Nare; Sivalingam Ramesh; Praveen Kumar Basavi; Vijay Kakani; Chinna Bathula; Hemraj M Yadav; Prakash Babu Dhanapal; Rama Krishna Reddy Kotanka; Visweswara Rao Pasupuleti

doi:10.1038/s41598-022-05964-8

Sonication-supported synthesis of cobalt oxide assembled on an N-MWCNT composite for electrochemical supercapacitors via three-electrode configuration

Sci Rep. 2022 Feb 7;12(1):1998. doi: 10.1038/s41598-022-05964-8.

Authors

Rajendra Kumar Nare¹, Sivalingam Ramesh², Praveen Kumar Basavi³, Vijay Kakani⁴, Chinna Bathula⁵, Hemraj M Yadav⁶, Prakash Babu Dhanapal¹, Rama Krishna Reddy Kotanka⁷, Visweswara Rao Pasupuleti^{8

9}

Affiliations

¹ School of Applied Sciences, REVA University, Bangalore, 560064, India.
² Department of Mechanical, Robotics and Energy Engineering, Dongguk University -Seoul, Pil-dong, Jung-gu, 04620, Seoul, Republic of Korea.
³ Department of Chemistry, Sri Venkateswara University, Tirupati, 517502, Andhra Pradesh, India.
⁴ Department of Integrated System Engineering, School for Global Convergence Studies, Inha University, 100 Inha-ro, Nam-gu, 22212, Incheon, Republic of Korea.
⁵ Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Pildong-ro 1 gil, Jung-gu, Seoul, 04620, Republic of Korea.
⁶ School of Nanoscience and Technology, Shivaji University, Kolhapur, 416004, India.
⁷ School of Applied Sciences, REVA University, Bangalore, 560064, India. k.ramakrishnareddy@reva.edu.in.
⁸ Department of Biomedical Sciences and Therapeutics, Faculty of Medicine and Health Sciences, University of Malaysia Sabah, Kota Kinabalu, 88400, Sabah, Malaysia. pvrao@ums.edu.my.
⁹ Centre for International Collaboration and Research, Reva University, Rukmini Knowledge Park, Kattigenahalli, Yelahanka, Bangalore, 560064, Karnataka, India. pvrao@ums.edu.my.

Abstract

The Co₃O₄@N-MWCNT composite was synthesized by a sonication-supported thermal reduction process for supercapacitor applications. The structural and morphological properties of the materials were characterized via Raman, XRD, XPS, SEM-EDX, and FE-TEM analysis. The composite electrode was constructed into a three-electrode configuration and examined by using CV, GCD and EIS analysis. The demonstrated electrochemical value of ~ 225 F/g at 0.5 A/g by the electrode made it appropriate for potential use in supercapacitor applications.