An investigation on the electrochemical performance of Mn3O4-based aqueous symmetric supercapacitor devices
- Title
- An investigation on the electrochemical performance of Mn3O4-based aqueous symmetric supercapacitor devices
- Creator
- Babu, Chrisma Rose; Anila, E.I.; Avani, A.V.; Jose, Roshan; Xavier, T.S.
- Description
- Manganese (ii, iii) oxide (Mn3O4) is one of the promising materials in the realm of high-performance supercapacitors. The high theoretical specific capacitance, low cost, non-toxicity, environmental compatibility, and natural abundance made it significant in the research field. A low-temperature hydrothermal synthesis method was adopted to prepare Mn3O4 (hausmannite) nanoparticles with a tetragonal spinel structure. The as-prepared nanoparticles were assessed for the structural, elemental, electrical, optical and nitrogen adsorptiondesorption studies through XRD, FTIR, Raman spectroscopy, XPS, DC conductivity, UV-vis absorption and BET analyses. Morphological studies were done using FESEM and TEM and a mixture of nanorods and nanocubes were observed. The electrochemical performances of the as-prepared Mn3O4 nanoparticles were investigated by cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) method and electrochemical impedance spectroscopy (EIS) in a three-electrode system. The present work reports the fabrication of a prototype aqueous symmetric supercapacitor device for the first time. The electrochemical studies were performed in 0.5 M Na2SO4 electrolyte on the separator with a potential window of 0 V to 1 V. A specific capacitance of 68 Fg?1 at a current density of 1 Ag?1 was observed from the constant charge/discharge method. It exhibited a cyclic stability of 72% with a coulombic efficiency of 100% after 1000 cycles. This underscores the noteworthy role of manganese oxide nanoparticles as electrode materials in supercapacitors. 2026 The Author(s). Published by the Royal Society of Chemistry
- Source
- RSC Advances;Volume;16;Issue;11;pp.9806-9816
- Date
- 01-01-2026
- Publisher
- Royal Society of Chemistry
- Coverage
- Babu C.R., Optoelectronic and Nanomaterials' Research Laboratory, Department of Physics and Electronics, CHRIST University, Karnataka, Bengaluru, 560029, India, Cochin University of Science and Technology, Kerala, Ernakulam, 682022, India; Anila E.I., Optoelectronic and Nanomaterials' Research Laboratory, Department of Physics and Electronics, CHRIST University, Karnataka, Bengaluru, 560029, India; Avani A.V., Optoelectronic and Nanomaterials' Research Laboratory, Department of Physics and Electronics, CHRIST University, Karnataka, Bengaluru, 560029, India; Jose R., Department of Physics, Marian College Kuttikkanam Autonomous, Kerala, Idukki, 685531, India; Xavier T.S., Government College for Women, Kerala, Thiruvananthapuram, 695014, India
- Rights
- All Open Access; Gold Open Access; Green Open Access
- Relation
- ISSN: 20462069; CODEN: RSCAC
- Format
- online
- Language
- English
- Type
- Article
Collection
Citation
Babu, Chrisma Rose; Anila, E.I.; Avani, A.V.; Jose, Roshan; Xavier, T.S., “An investigation on the electrochemical performance of Mn3O4-based aqueous symmetric supercapacitor devices,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 19, 2026, https://archives.christuniversity.in/items/show/22591.