Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.171
Publication date: 16th December 2024
The exponentially growing demand for energy storage has reached a point where it outpaces the energy density of the lithium-ion battery, which is currently the dominant commercial option (~200 Wh kg-1). This has led to an intense search for viable alternatives. Metal-sulfur technology has emerged as a promising candidate for the next generation of rechargeable batteries, offering a high theoretical gravimetric energy density and the additional benefits of low cost and non-toxicity of sulfur [1][2].
Notwithstanding, sulfur presents a number of challenges that impede battery performance, with the shuttle effect and slow reaction kinetics being the most extensively studied. Among the various strategies proposed to address these issues, the chemical trapping of polysulfides (LiPSs) has demonstrated considerable promise [3]. Furthermore, recent studies indicate that applying a magnetic field to materials with ferromagnetic properties can enhance cycling performance [4].
This study presents a novel approach that demonstrates the efficacy of combining recycled ferrite with an external magnetic field generated by a permanent magnet in significantly improving reaction kinetics and polysulfide adsorption, thereby enhancing electrochemical stability. A comprehensive kinetic analysis indicates that the external magnetic field reduces polarization, increases the Li+ diffusion coefficient, and reduces the activation energy between electrochemical stages. The electrode demonstrates a capacity retention of up to 40% and a capacity loss per cycle of only half that observed at a high rate of 1C. At an ultra-high rate of 10C, it maintains a capacity of 507 mAh g⁻¹ after 150 cycles and delivers an areal capacity of up to 3 mAh cm⁻² with an ultra-high loading of 13 mg cm⁻². In addition to its impressive electrochemical performance, this method is more sustainable, utilizing recycled electronic waste processed through dry milling, thus eliminating the need for fossil-derived carbons.
This research was funded by Ministerio de Ciencia e Innovación MCIN/AEI/10.13039/501100011033 (Projects PID2020-113931RB-I00 & PID2023-147080OB-I00), European Union “NextGenerationEU”/PRTR (Project PDC2021-120903-I00), Junta de Andalucía (FQM-175) and Navarra Government (project PC003-04 3D-MAGNET). Alvaro Bonilla gratefully acknowledges Spanish Ministry of Universities the granting of aid for predoctoral contracts (FPU20/02673). The authors wish to acknowledge the technical staff from the Instituto Químico para la Energía y el Medioambiente (IQUEMA) and Servicio Central de Apoyo a la Investigación (SCAI) of Córdoba University.
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.