Selective Recovery of Cobalt from Lithium-Ion Batteries Using Deep Eutectic Solvents Assisted by Microwave and Ultrasound

• Grant number: 25/07112-6
• Support Opportunities: Scholarships abroad - Research
• Start date: July 06, 2025
• End date: September 28, 2025
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Márcia Andreia Mesquita Silva da Veiga
• Grantee: Márcia Andreia Mesquita Silva da Veiga
• Host Investigator: Carlos Enrique Abad Andrade
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
• Institution abroad: Bundesanstalt Für Materialforschung Und -Prüfung, Germany

Abstract

The growing demand for lithium-ion batteries has driven the need to efficiently recycle critical metals such as cobalt (Co), aiming to reduce dependence on mining and its associated environmental and social impacts. This project proposes an innovative method for the selective recovery of Co from spent batteries using deep eutectic solvents (DES) assisted by microwave and ultrasound. Combining these technologies seeks to optimize extraction efficiency while minimizing the use of harsh reagents and promoting a more sustainable process. The project will be conducted at BAM, in Berlin, where the state-of-the-art infrastructure will allow advanced characterization of the recovered materials, ensuring validation of the proposed method. This research stay will enable the deepening of competencies in sustainable hydrometallurgical processes and strengthen scientific collaboration with the Bundesanstalt für Materialforschung und -prüfung (BAM), expanding the applicant's international research network and contributing to the development of greener industrial recycling practices and the advancement of the circular economy in battery recycling.