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Synthesis and characterization of nanoparticles of manganese and lithium spinel doped with cations, anion and cations + anion as positive electrode materials for lithium ion battery

Grant number: 18/16158-6
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): November 01, 2018
Status:Discontinued
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal Investigator:Nerilso Bocchi
Grantee:Juliana Bruneli Falqueto
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated scholarship(s):19/25700-1 - In situ/operando characterization of doped lithium manganese oxide nanoparticles as positive electrode materials for lithium-ion battery, BE.EP.DR

Abstract

This project is inserted in the context of development of new materials for energy storage, which together with global warming and renewable energy production, are important topics under discussion in the society. In order to supply energy needs and also due to the depletion of fossil fuels, the search for new energy production and sustainable energy technologies becomes essential. Lithium ion batteries dominate the market as power source for portable equipment and they are promising solution for applications that require high power such as electric vehicles and electric power storage for supply network. In this context, the development of new materials for battery electrodes has become one of the most studied topics in the area. Spinel-type manganese oxides are considered promising as positive electrode materials because of their high specific capacity, environmentally friendly, safety and low cost. However, this material still requires study to improve its cycling performance. For such, strategies such as cationic doping (manganese substitution by nickel, cobalt and aluminum), anionic doping (oxygen substitution by sulfur) and cationic + anionic doping and particle size reduction achieving nanoscale are proposed. Appling Materials Science and Electrochemistry concepts, this project proposes the use of hydrothermal microwave-assisted method in the development of new nanoparticles of doped spinels of manganese for positive electrode of lithium ion batteries with high specific capacity values, high cyclability, safety and low cost. (AU)