Rapid Synthesis of Citric Acid Coated Manganese Ferrite Nanoparticles: Electrochemical Supercapacitor Applications

• Published in: American Journal of Nano Research and Applications 2024-10, Vol.12 (2), p.23-28
• Main Authors: Vardhan, Palem, Moorthi, Pichumani, Nihitha, Palanivel, Kamalikka, Sivakumar, Surya, Karthikeyan
• Format: Article
• Language: English
• ISSN: 2575-3754; 2575-3738
• DOI: 10.11648/j.nano.20241202.11

To manufacture nanoscale materials with high surface density, achieving average pore size and volume requires energy-intensive and time-consuming operations. We present a straightforward rapid, and quick approach for synthesizing citric acid coated manganese ferrite (MnFe 2 O 4 ) nanoparticles through chemical co-precipitation with 1 M NaOH as an oxidative solution. The citric acid coated MnFe 2 O 4 nanoparticles were studied by powder X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. The powder X-ray diffraction results confirm the spinel structure of MnFe 2 O 4 based on face centred cubic lattice parameters. The Fourier transform infrared spectroscopy results confirm the vibrational modes of citric acid coated MnFe 2 O 4 . The scanning electron microscope results of the as synthesised citric acid coated MnFe 2 O 4 product had a spherical form with an average diameter of 20 nm. The electrochemical properties of MnFe 2 O 4 nanoparticles were studied using cyclic voltammetry, charge-discharge, and electrochemical impedance spectroscopy using 1M NaOH as a electrolyte. Citric-acid coated MnFe 2 O 4 nanoparticles shows pseudo-capacitance behaviour properties and delivers a specific capacitance value of about 381 F g -1 at 1 A g -1 specific current with 15% retention rate at high specific currents. The specific capacitance remained at 92% after 10,000 cycles at a specific current of 2 A g −1 which is clearly showed.