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Synthesis of rGO/PANi/MnO2 ternary nanocomposite used for supercapacitor electrode by 3D printing and electrodeposition techniques

Year: 2025

Type: article

Abstract: Three-dimensional (3D) printing has emerged as a promising method for fabricating advanced electrode materials. In this study, a ternary nanocomposite film of reduced graphene oxide (rGO), polyaniline (PANi), and MnO2 nanoparticles was prepared by 3D printing and electrochemical deposition for high-performance supercapacitors. A printable GO/aniline ink (1:1 mass ratio) was printed and electrochemically treated in 0.1 M H2SO4: first reduced at –0.8 V for 30 s, then electropolymerized by cyclic voltammetry (–0.4 to +0.95 V). MnO₂ was subsequently electrodeposited at +0.6 V for 200 s in MnSO4/H2SO4/KCl solution. FE-SEM/EDX confirmed uniform MnO2 distribution (~2 wt%). Electrochemical tests in 1 M H2SO4 showed enhanced capacitance and stability, with the rGO/PANi/MnO2 electrode reaching 740 F/g at 1 A/g and retaining 97% capacitance after 5000 cycles at 15 A/g.

Source: Vietnam Journal of Catalysis and Adsorption

DOI: 10.62239/jca.2025.046

Authors: Thủy Đỗ Thị, Nguyen Tuan Dung Nguyen, Le Trong Lu, Nguyen Le Huy Nguyen

Institutions: Institute of Materials Science, Vietnam Academy of Science and Technology, Trường Đại học Khoa học và Công nghệ Hà Nội, Hanoi University of Science and Technology

Language: English

Topic: Supercapacitor Materials and Fabrication

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

OpenAlex ID: W4415044966

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