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Contribution to the study of ionic conduction mechanisms in glasses

Grant number: 21/12412-8
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): November 01, 2021
Status:Discontinued
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal Investigator:Ana Candida Martins Rodrigues
Grantee:Vinicius Martins Zallocco
Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated research grant:13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass, AP.CEPID

Abstract

Ionic conductors are used in the most diverse areas of knowledge, highlighting their use as electrolytes in solid-state batteries. However, the mechanisms of ionic conductivity in glasses are still not very well elucidated. One of the most serious difficulties involves separating the contribution of the mobility term from the density of effective charge carriers in the total conductivity. There are some methods available in the literature demonstrating how it is possible to separate this contribution. This project proposes using selected methods, comparing and critically analyzing the difference between the obtained results. The selected methods will be applied in model glasses - for instance, lithium disilicate and/or sodium disilicate, as well as in glasses with new chemical compositions designed to increase the ionic conductivity. Furthermore, an internship abroad is planned to complement the experimental measurements carried out in Brazil. In this way, the project intends to collaborate with the advance in understanding the mechanisms involved in the ionic conduction of glasses. (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)
CAMPOS, JOAO, V; LAVAGNINI, ISABELA R.; ZALLOCCO, VINICIUS M.; FERREIRA, EDUARDO B.; PALLONE, ELIRIA M. J. A.; RODRIGUES, ANA C. M.. Flash sintering with concurrent crystallization of Li1.5Al0.5Ge1.5(PO4)3 glass. ACTA MATERIALIA, v. 244, p. 10-pg., . (13/07793-6, 19/14677-9, 21/06509-9, 21/12412-8)
CAMPOS, JOAO V.; LAVAGNINI, ISABELA R.; ZALLOCCO, VINICIUS M.; JESUS, LILIAN M.; RODRIGUES, ANA C. M.. Ultrafast crystallization and sintering of Li1.3Al0.3Ti1.7(PO4)3 glass through flash sinter-crystallization. Journal of the American Ceramic Society, v. N/A, p. 16-pg., . (21/06509-9, 21/12412-8, 13/07793-6)

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