Synthesis of Ternary Nanocomposites of MnO2/PANI/Maxsorb and their Performance as an Electrode Material for Supercapacitors

Aprilianti Nur'aini; Imam Prasetyo; Teguh Ariyanto

doi:10.5614/j.math.fund.sci.2025.57.2.2

Authors

Aprilianti Nur'aini Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No. 2 UGM, 55281, Yogyakarta, Indonesia
Imam Prasetyo Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No. 2 UGM, 55281, Yogyakarta, Indonesia
Teguh Ariyanto Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No. 2 UGM, 55281, Yogyakarta, Indonesia

DOI:

https://doi.org/10.5614/j.math.fund.sci.2025.57.2.2

Keywords:

manganese dioxide, Maxsorb, polyaniline, supercapacitor, ternary nanocomposite

Abstract

Increasing performance of supercapacitors can be achieved by using a composite of electrode materials. Nevertheless, selecting appropriate materials and determining the optimal combination composition remain significant challenges. In this research, a ternary composite of MnO₂/polyaniline (PANI)/Maxsorb was studied. The combination of Maxsorb, PANI, and MnO? is a unique feature of this research, with Maxsorb acting as a porous structural framework; PANI enhancing electrical conductivity; and MnO? providing high pseudocapacitance. The ternary material was prepared by impregnation of MnO₂ and PANI into the pores of Maxsorb carbon in a two-sequence procedure, i.e., (i) incipient wetness impregnation of Mn(NO₃)₂ into porous carbon followed by calcination to obtain MnO₂/Maxsorb, and (ii) in situ polymerization of aniline monomer in the MnO₂/Maxsorb, hence obtaining the final ternary nanocomposite of MnO₂/PANI/Maxsorb. The electrochemical test using H₂SO₄ electrolyte (1 M) revealed that the ternary material outperformed single porous carbon or PANI as well as their binary nanocomposite in terms of properties such as energy density, power density, and capacitance. The ternary material had a specific surface area of around 2,078 m² g^-1, containing microporous and mesoporous structures. The material featured a specific capacitance up to 500 F g^-1 and a power density of 37.6 kW kg^-1 as well as an energy density of 62.69 Wh kg^-1.

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