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Updated: Feb 1, 2026

Electrochemical Impedance Spectroscopy as a Tool for Electrochemical Rate Constant Estimation
Published on: October 10, 2018
Synthesis and electrochemical characterization of electroactive IoNanofluids with high dielectric constants from
Aswathy Joseph1, Marylin Mary Xavier, Jacek Fal
1School of Chemical Sciences (SCS), Mahatma Gandhi University, Kottayam, Kerala 686 560, India. aswathyj@gmail.com sureshmathewmgu@gmail.com.
Abstract:
An iron oxide based-electroactive IoNanofluid with a high dielectric constant, high stability and low viscosity was synthesized from ferrous sulphate heptahydrate via a facile microwave assisted one-step route in 1-butyl-4-methylpyridinium chloride. The IoNanofluid exhibited CE coupled faradaic redox reactions involving reversible chemical reaction and reversible electron transfer steps. A transition from diffusion controlled to surface controlled capacitive processes was observed at varying scan rates. The efficiency of the charge-discharge process was greater than 94% even after 100 cycles.
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