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Electrochemical instabilities in lithium-ion and lithium-oxygen batteries: an in operando investigation

Grant number: 19/18847-6
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): March 01, 2020
Effective date (End): July 31, 2023
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal researcher:Raphael Nagao de Sousa
Grantee:Gabriel Floriano Costa
Home Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:16/01817-9 - Design and control of self-organized electrochemical patterns, AP.JP


The increasing use of mobile devices and electric vehicles has brought as one of the greatest challenges of contemporary civilization the need for batteries that supplies this energy demand. Recently, spontaneous potential oscillations have been identified during the process of discharging lithium-ion and lithium-oxygen batteries. However, the papers presented did not perform a systematic study about the parameter that may influence this behavior and the impact of instabilities on battery efficiency. Nonlinear dynamics in these systems are known to occur under conditions far from thermodynamic equilibrium as a result of the interaction between kinect instabilities and mass transport properties. Understanding, therefore, the reaction mechanism can provide important clues to the birth and evolution of this temporal complexity, thereby enabling precise control and prevention of battery efficiency collapse. Thus, this project proposes an investigation in operando of the electrochemical reaction kinects of lithium-ion and lithium-oxygen batteries in oscillatory regime. Therefore, temporal resolution characterization techniques will be used to monitor spontaneous emergence of the patterns and, thus, extract kinect and thermodynamic information that can contribute to the process understanding. With the project development, it is hoped to gain a deeper understanding of how certain experimentally accessible parameters can impact the nonlinear dynamics observed during battery operation. (AU)

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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)
PINTO, MARIA R.; COSTA, GABRIEL F.; MACHADO, EDUARDO G.; NAGAO, RAPHAEL. Self-Organization in Electrochemical Synthesis as a Methodology towards New Materials. CHEMELECTROCHEM, v. 7, n. 14 MAY 2020. Web of Science Citations: 0.

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