Polyoxometalate/?-Fe2O3/polyaniline composite: Tailored approaches for high-performance supercapacitors
- Title
- Polyoxometalate/?-Fe2O3/polyaniline composite: Tailored approaches for high-performance supercapacitors
- Creator
- Pujari S.; Desai N.; Y.N. S.; Waikard M.R.; Sonkawade R.G.; M. N.; Nazareth R.A.
- Description
- The need for portable, high-performance electronics that have high power or energy density has increased significantly in recent years. In this work, a composite material was coated on stainless steel that consists of polyoxometalate (POM)/?-Fe2O3/polyaniline (PANI) as an electrode material for a symmetric supercapacitor. ?-Fe2O3 was prepared using starch as a template while PANI was electrodeposited. The physical and chemical characteristics of the modified electrodes were investigated via Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and electrochemical techniques such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge[sbnd]discharge (GCD) experiments. In 1 M H2SO4, the composite had a specific capacitance of 528 F/g at a current density of 0.2 A/g. In addition, the composite exhibited a high energy density of 73.4 Wh kg?1 at a high-power density of 7.14 kW kg?1 and 91.62 % capacity retention after 10 cycles. The results show that POM/?-Fe2O3/PANI is a promising composite electrode for use as a supercapacitor electrode material. 2024 The Authors
- Source
- Journal of Alloys and Compounds, Vol-1010
- Date
- 2025-01-01
- Publisher
- Elsevier Ltd
- Subject
- Polyaniline; Polyoxometalate; Supercapacitor; ?-Fe2O3
- Coverage
- Pujari S., Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India; Desai N., Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India; Y.N. S., Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India; Waikard M.R., Radiation and Materials Research Laboratory, Department of Physics, Shivaji University, Maharashtra, Kolhapur, 416004, India, School of Nanoscience and Biotechnology, Shivaji University, Maharashtra, Kolhapur, 416004, India; Sonkawade R.G., Radiation and Materials Research Laboratory, Department of Physics, Shivaji University, Maharashtra, Kolhapur, 416004, India, School of Nanoscience and Biotechnology, Shivaji University, Maharashtra, Kolhapur, 416004, India; M. N., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560029, India; Nazareth R.A., Department of Chemistry, St Aloysius (Deemed to be University), Mangaluru, 575003, India
- Rights
- All Open Access; Hybrid Gold Open Access
- Relation
- ISSN: 9258388; CODEN: JALCE
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Pujari S.; Desai N.; Y.N. S.; Waikard M.R.; Sonkawade R.G.; M. N.; Nazareth R.A., “Polyoxometalate/?-Fe2O3/polyaniline composite: Tailored approaches for high-performance supercapacitors,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 24, 2025, https://archives.christuniversity.in/items/show/12564.