Roll-to-Roll Dry Coating Process for Low Cost and High-Energy-Density Li-ion Batteries

Roll-to-Roll Dry Coating Process for Low Cost and High-Energy-Density Li-ion BatteriesPaik Ungyu a, Jiwoon Kim a, Minsung Kim a, Myungju Woo a, Seungwoo Lee a, Jaeik Kim a, Hyungjun Lee a, Seungcheol Myeong a, Insung Hwang a, Ganggyu Lee a, Gunwoo Cha a, Hongjun Park a, Seunggun Choi a, Chanjin Park a, Seungmin Han aa Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of KoreaMaterials for Sustainable Development Conference (MATSUS)Proceedings of MATSUS Spring 2024 Conference (MATSUS24)#SUSEN - Advances in Green Energy CarriersBarcelona, Spain, 2024 March 4th - 8thOrganizers: Ungyu Paik and Kangli WangOral, Paik Ungyu, presentation 246DOI: https://doi.org/10.29363/nanoge.matsus.2024.246Publication date: 18th December 2023In the current growth of the electric vehicle (EV) market, the roll-to-roll dry coating process, enabling mass production of high-thick electrode (≥10mAh cm-2), stands out as an innovative and practical approach to fabricate the low-cost and high-energy-density Li-ion batteries (LIBs). However, as the thickness of the electrode fabricated by dry coating process becomes greater (≥10 mAh cm-2), Li-ion migration resistance (Rion) and charge-transfer resistance (Rct) in the electrode dramatically increase due to long diffusion lengths for Li-ion and electron. This is primarily associated with the non-uniform distribution of electrode components and severe fractures of cathode active material during the dry coating process. Therefore, it is crucial to reduce diffusion lengths in the thick electrode to achieve high energy density LIBs. In this study, we identified the factors associated with the increase in ionic resistance through electrochemical analysis. Then, manipulation of material and process parameters was conducted to optimize the microstructure of the dry electrode. Finally, we successfully developed a 10mAh cm-2 dry electrode with low ionic resistances, exhibiting the enhanced of Li+/e- kinetics and improved high C-rate capability. © FUNDACIO DE LA COMUNITAT VALENCIANA SCITOnanoGe 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.nanoGe Fall MeetingnanoGe Fall Meeting (NFM) is a multiple symposia conference celebrated yearly and 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.nanoGe Spring MeetingThis conference is a unique series of symposia focused on advanced materials preparation and fundamental properties and their applications, in fields such as renewable energy (photovoltaics, batteries), lighting, semiconductor quantum dots, 2-D materials synthesis and semiconductors fundamentals, bioimaging, etc.International Conference on Hybrid and Organic PhotovoltaicsInternational 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 OptoelectronicsThe 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.International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and OptoelectronicsThe 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.