Electrical coupling of individual electrocatalytic oscillators

• Grant number: 18/23942-5
• Support Opportunities: Scholarships in Brazil - Master
• Start date: March 01, 2019
• End date: September 30, 2020
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Hamilton Brandão Varela de Albuquerque
• Grantee: Rafael Luiz Romano
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 13/16930-7 - Electrocatalysis V: electrocatalytic processes of chemical and electrical energy interconversion, AP.TEM

Abstract

Under a given set of experimental conditions, potential (or current) oscillations can be observed during the electro-oxidation of small organic molecules, such as methanol, formic acid, ethylene glycol and glucose, for example. Variables like identity of the organic molecule, temperature, applied potential, nature and superficial state of the catalyst, supporting electrolyte, etc., directly affect the frequency, waveform, and amplitude of those oscillations. When electrochemical oscillators are coupled, the synchronization phenomena can be observed, which has a direct influence on the evolution of oscillations as a function of time. In this sense, identifying, exploring and characterizing the synchronization phenomena using the coupling of electrochemical oscillators has been shown promising and possible to be applied in different areas. Thus, in this work, we aim to study how current oscillations that occur during the electro-oxidation of molecules such as methanol, formic acid and glucose behave under the unidirectional coupling of two electrochemical oscillators. Particularly, we are interested in investigating how the identity of the master system affects the evolution of the slave, in terms of frequency, amplitude and waveform of oscillations. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ROMANO, R. L.; DAMACENO, L. P.; MAGALHAES, D. V.; PARMANANDA, P.; VARELA, H.. Electrical coupling of individual electrocatalytic oscillators. Chaos, v. 32, n. 8, p. 10-pg., 2022-08-01. (19/22183-6, 18/23942-5)

MELLE, GABRIEL B.; ALTAIR, THIAGO; ROMANO, RAFAEL L.; VARELA, HAMILTON. Electrocatalytic Efficiency of the Oxidation of Ethylene Glycol, Glycerol, and Glucose under Oscillatory Regime. ENERGY & FUELS, v. 35, n. 7, p. 8-pg., 2021-03-11. (18/12491-2, 19/22183-6, 18/23942-5, 13/16930-7)

DE OLIVEIRA, M. G.; MELLE, G. B.; ROMANO, R. L.; VARELA, H.. he Impact of Water Concentration on the Electro-Oxidation of Formic Acid on Platinu. Journal of the Electrochemical Society, v. 169, n. 2, FEB 1 2022. (18/23942-5, 20/15230-5, 19/22183-6, 20/03519-0, 21/09489-9)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

ROMANO, Rafael Luiz. Electrical coupling of individual electrocatalytic oscillators. 2020. Master's Dissertation - Universidade de São Paulo (USP). Instituto de Química de São Carlos (IQSC/BT) São Carlos.