Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.286
Publication date: 18th December 2023
Recycling processes for lithium-ion batteries (LIBs) have been developed to remove chemical compounds from these batteries for secondary uses, as well as resynthesizing cathode material using direct or short-loop recycling, for use in cathodes of fresh batteries. The reason for extracting compounds from the cathode of discarded LIBs is that they are composed of high value and critical minerals such as Li, Co, Ni and Mn. In particular the cathodes with compositions such as LiCoO2, LiNiyMnzCoxO2, and LiMn2O4 are important to evaluate for reclamation of these metals and re-use. It is known from the literature that end-of-life LiNiyMnzCoxO2 contains around 15 to 20% less lithium than fresh cathode and therefore cannot be directly reuse without further lithiation. It is a challenge to return this end of life and recovered black mass, containing NMC materials to form that can be reused in a new cell. In this work we describe a direct recycling route for the discarded NMC532 using a low cost, and facile relithiation process. The cathode material was extracted from a disassembled end of life or scrap NMC vs graphite pouch cell, and then delaminated from aluminium using a 3.5M NaOH solution that selectively dissolved the Al foil. The recovered powder was analyzed by XRF, XRD, CHNS and ICP-OES techniques. After characterization, solid state relithiation was carried out with the lithium source LiOH at 700 °C and the product of this reaction was analyzed again using the above techniques and evaluated electrochemically.
Lucas is thankful to CNPq for their PhD scholarship in Brazil, CAPES and the PDSE program for the scholarship granted for the internship at the University of Birmingham.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.