| Grant number: | 20/12632-5 |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| Start date: | April 01, 2021 |
| End date: | March 31, 2027 |
| Field of knowledge: | Physical Sciences and Mathematics - Chemistry - Physical-Chemistry |
| Principal Investigator: | Raphael Nagao de Sousa |
| Grantee: | Eduardo de Oliveira Prates Fantini Parma |
| Host 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 |
| Associated scholarship(s): | 23/08663-0 - Voltage oscillation simulation of Li-ion batteries with multiscale and multiphysics models, BE.EP.DD |
Abstract The impact of lithium-ion batteries on the present-day energetic matrix is evident. Yet, optimization in the making of these devices is still desired, and a deep and clear understanding of these batteries' intercalation mechanism would be helpful for this search. In 2018, the first potential oscillations during the charge and discharge of a lithium-ion battery was reported, obtained in a battery with a Li4Ti5O12 anode. This recent result open doors for the investigation of the lithiation in these systems, as there is not a detailed description of the chemical dynamics associated to this oscillations yet, fact that can be expanded to a lack of knowledge on relevant phenomena on these devices in general. In this context, computer modeling presents itself as a powerful tool for an investigation of the intercalation mechanism, considering that it allows us to track lithium concentration and electrical potential on each point of the system, useful information for the analysis of the roles that mass transport and electrochemical reactions play on the lithiation process. That said, this project proposes the search for a numerical description of the potential oscillations that is faithful to the experimental data, followed by an investigation of the mechanism behind the intercalation process, the latter done based on the lithium concentration and electric potential profiles generated on the numerical experiments. (AU) | |
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