Proceedings of the 1st International Symposium on African Sustainable Energy Solutions (AfrSusEnS 2024)

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The Development of Mn Doped NiO@RGO Nanocomposite for Supercapacitors Applications

Authors
Yared S. Worku1, *, Ludwe L. Sikeyi1, Nithyadharseni Palaniyandy1, Mkhulu M. Mathe1
1Institute for the Catalysis and Energy Solutions (ICES), College of Science and Engineering, Technology, University of South Africa, Florida Science Campus, Roodepoort, 1709, South Africa
*Corresponding author. Email: yared76@yahoo.com
Corresponding Author
Yared S. Worku
Available Online 22 July 2025.
DOI
10.2991/978-94-6463-797-7_19How to use a DOI?
Keywords
Supercapacitor; Mn-NiO@RGO; Co-precipitation; Hydrothermal; Specific capacity
Abstract

NiO is a potentially electroactive material for energy storage applications. However, its poor electrical conductivity and low ionic transport properties have restricted its potential for supercapacitor applications. To overcome the problems doping with metal elements and making RGO composite is a possible solution to improve the electrochemical performance of NiO. In this study Mn-doped NiO@RGO nano-composite materials were synthesized via a co-precipitation followed by hydrothermal method this method is advantages to control particle size and produce high purity sample. The result showed that doping of Mn and integration of RGO with NiO improved the specific capacity of NiO from 514 F g−1 to 1870 F g−1 at 1.0 A g−1 and increased its cycle stability from 80.7% to 90% over 1000 cycles. Moreover, Mn-NiO@RGO showed a higher energy density of 63.05 Wh (Kg)-1 at 285.4 W (Kg)-1, compared to Mn-NiO and NiO. Therefore, the Mn doped NiO@RGO electrode could be a promising material for advanced energy storage systems.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 1st International Symposium on African Sustainable Energy Solutions (AfrSusEnS 2024)
Series
Advances in Engineering Research
Publication Date
22 July 2025
ISBN
978-94-6463-797-7
ISSN
2352-5401
DOI
10.2991/978-94-6463-797-7_19How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Yared S. Worku
AU  - Ludwe L. Sikeyi
AU  - Nithyadharseni Palaniyandy
AU  - Mkhulu M. Mathe
PY  - 2025
DA  - 2025/07/22
TI  - The Development of Mn Doped NiO@RGO Nanocomposite for Supercapacitors Applications
BT  - Proceedings of the 1st International Symposium on African Sustainable Energy Solutions (AfrSusEnS 2024)
PB  - Atlantis Press
SP  - 140
EP  - 149
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-797-7_19
DO  - 10.2991/978-94-6463-797-7_19
ID  - Worku2025
ER  -