UNVEILING THE ROLE OF α-MnO2 NANORODS IN BOOSTING ELECTROCHEMICAL PERFORMANCE OF AC–MnO2 SYMMETRIC SUPERCAPACITORS

Yusril Al Fath, Surya Prihanto, Ahmad Faruq Abdurrahman, Ayu Aprilia, Suprihatin Suprihatin, Iqbal Firdaus

Abstract


Activated carbon (AC) - Manganese dioxide (MnO2) composite electrodes have attracted significant attention for supercapacitor applications due to the synergistic combination of electric double-layer capacitance from carbon materials and pseudocapacitive charge storage from MnO2. Despite their promising performance, the influence of MnO2 morphology on electrochemical behavior remains insufficiently understood when crystal phase and mass loading are controlled. In this work, α-MnO2 nanorods and α-MnO2 particles were synthesized via a hydrothermal method and incorporated into AC matrices with identical MnO2 mass loading to systematically evaluate the effect of morphology on charge-discharge performance. Structural characterization confirms that both materials possess the same α-phase, while distinct one-dimensional and particulate morphologies are observed. Electrochemical measurements show that the nanorod-based composite delivers a superior gravimetric capacitance of 40.67 F g-1 and a higher specific energy of 7.36 Wh kg-1 compared to the particle-based counterpart. These findings highlight morphology engineering of α-MnO2 as an effective strategy to further enhance the performance of AC–MnO2 composite electrodes for supercapacitors.

Keywords


Activated Carbon; α-MnO2; nanorod; supercapacitor

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References


1. Zhang D, Rong C, Ahmad T, Xie H, Zhu H, Li X, et al. Review and outlook of global energy use under the impact of COVID-19. Eng Reports [Internet]. 2023;5(3):e12584. Available from: https://doi.org/10.1002/eng2.12584

2. Asti RD, Putra A. Pengaruh Jenis Larutan Elektrolit Terhadap Sifat Elektrokimia Superkapasitor dari Karbon Aktif Sabut Kelapa Program Studi Kimia , Universitas Negeri Padang. 2024;8:19496–504.

3. Devi R, Kumar V, Kumar S, Kumar Sisodiya A, Kumar Mishra A, Jatrana A, et al. Development of activated carbon by bio waste material for application in supercapacitor electrodes. Mater Lett. 2023 Mar;335:133830.

4. Zhai Z, Zhang L, Du T, Ren B, Xu Y, Wang S, et al. A review of carbon materials for supercapacitors. Mater Des [Internet]. 2022;221:111017. Available from: https://doi.org/10.1016/j.matdes.2022.111017

5. Tang XN, Zhu SK, Ning J, Yang XF, Hu MY, Shao JJ. Charge storage mechanisms of manganese dioxide-based supercapacitors: A review. Xinxing Tan Cailiao/New Carbon Mater. 2021;36(4):702–10.

6. Yin M, Miao H, Hu R, Sun Z, Li H. Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range. J Power Sources. 2021;494(March):229779.

7. Jabeen N, Xia Q, Savilov S V, Aldoshin SM, Yu Y, Xia H. Enhanced Pseudocapacitive Performance of α-MnO2 by Cation Preinsertion. ACS Appl Mater Interfaces [Internet]. 2016 Dec 14;8(49):33732–40. Available from: https://doi.org/10.1021/acsami.6b12518

8. Jayachandran M, Rose A, Maiyalagan T, Poongodi N, Vijayakumar T. Effect of various aqueous electrolytes on the electrochemical performance of α-MnO2 nanorods as electrode materials for supercapacitor application. Electrochim Acta. 2021;366:137412.

9. Diantoro M, Istiqomah I, Fath Y Al, Mufti N, Nasikhudin N, Meevasana W, et al. Hierarchical Activated Carbon–MnO2 Composite for Wide Potential Window Asymmetric Supercapacitor Devices in Organic Electrolyte. Micromachines. 2022 Nov;13(11):1989.

10. Al Fath Y, Istiqomah I, Nasikhudin N, Diantoro M, Zulaikah S, Subagio A, et al. Various Low Magnetic Field Effect on Electrochemical Performance of Asymmetric Supercapacitor MnO2- Carbon-Based Composites. Mater Sci Forum. 2023;1080:99–105.

11. Modungwe TM, Kabongo GL, Mbule PS, Makgopa K, Coetsee E, Dhlamini MS. Unravelling the effect of crystal lattice compression on the supercapacitive performance of hydrothermally grown nanostructured hollandite α-MnO2 induced by incremental growth time. Sci Rep [Internet]. 2024;14(1):25837. Available from: https://doi.org/10.1038/s41598-024-70111-4

12. Liu J, Bao J, Zhang X, Gao Y, Zhang Y, Liu L, et al. MnO2-based materials for supercapacitor electrodes: challenges, strategies and prospects. RSC Adv [Internet]. 2022;12(55):35556–78. Available from: http://dx.doi.org/10.1039/D2RA06664E

13. Diantoro M, Istiqomah I, Fath Y Al, Nasikhudin N, Alias Y, Meevasana W. Potential of MnO2-based composite and numerous morphological for enhancing supercapacitors performance. Int J Appl Ceram Technol. 2023 Jul;20(4):2077–98.

14. Wu J, Huang H, Yu L, Hu J. Controllable Hydrothermal Synthesis of MnO2 Nanostructures. Adv Mater Phys Chem. 2013;03(03):201–5.

15. Diantoro M, Fath Y Al, Mufti N, Saputro A, Pahlevi RA, Muhammad M, et al. Enhancement Ion Diffusion Parameters of Organic Electrolytes on MnO 2 -Carbon Based Supercapacitor Using Low Magnetic Field. J Magentics. 2025;30(2):217–24.

16. Ollegott K, Peters N, Antoni H, Muhler M. Catalytic Carbon Monoxide Oxidation over Potassium-Doped Manganese Dioxide Nanoparticles Synthesized by Spray Drying. Emiss Control Sci Technol [Internet]. 2019;5(4):378–91. Available from: https://doi.org/10.1007/s40825-019-00125-2

17. Fadhil AB, Aziz AM, Altamer MH. Optimization of methyl esters production from non-edible oils using activated carbon supported potassium hydroxide as a solid base catalyst. Arab J Basic Appl Sci [Internet]. 2018;25(2):56–65. Available from: https://doi.org/10.1080/25765299.2018.1449414

18. Kour S, Tanwar S, Sharma AL. MnO2 nanorod loaded activated carbon for high-performance supercapacitors. J Alloys Compd [Internet]. 2022;910:164834. Available from: https://doi.org/10.1016/j.jallcom.2022.164834

19. Chen Z, Zhao S, Zhao H, Zou Y, Yu C, Zhong W. Nitrogen-doped interpenetrating porous carbon/graphene networks for supercapacitor applications. Chem Eng J. 2021;409(July 2020):127891.

20. Liu Y, Xiaoxiao Q, Zhang Z, Fan Y, Huang G, Zhang C. MnO2 nanospheres integrated into hierarchical porous carbon as electrode for high performance asymmetrical supercapacitors. J Energy Storage [Internet]. 2023;59:106440. Available from: https://www.sciencedirect.com/science/article/pii/S2352152X2202429X

21. Chodankar NR, Pham HD, Nanjundan AK, Fernando JFS, Jayaramulu K, Golberg D, et al. True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors. Small. 2020;16(37):1–35.

22. Guan L, Li D, Li Y, Qi C, Iamprasertkun P, Wang B. Sustainable Chemistry for Energy Materials Dimensional engineering of carbon-pseudocapacitive hybrids toward advanced supercapacitors : Recent advances and future perspectives. Sustain Chem Energy Mater [Internet]. 2025;2(September):100022. Available from: https://doi.org/10.1016/j.scenem.2025.100022

23. Plakia L, Kartsonakis IA. A Review on Design, Synthesis and Application of Composite Materials Based on MnO2 for Energy Storage. Vol. 18, Energies. 2025. p. 3455.




DOI: https://doi.org/10.18860/neu.v19i1.40891

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