摘要
Lithium-ion batteries are pivotal for electric vehicles due to their high energy density. However, enhancing the battery pack's energy density while ensuring longevity requires a nuanced design approach at the atomic and particle levels of electrode materials. This presentation will introduce methodologies for optimizing these designs. Initially, I will discuss the modifiable voltage characteristics observed in Mid Ni layered oxides at an atomic scale. This involves theoretical insights and detailed synchrotron-based analyses demonstrating how the voltage of cathodes can be determined by spin coupling within the active materials, thereby enhancing their energy density. Furthermore, the lecture will explore particle and electrode level designs that involve coating particles with elastic materials to prevent particle degradation and improve long-term cycle retention. This innovative approach will be shown to significantly enhance the performance of lithium-ion batteries. The presentation aims to provide comprehensive insights into battery research, emphasizing a multi-scale design strategy that combines theoretical frameworks with practical applications to push the boundaries of battery technology.
講者
Dr Kyu-Young Park
Assistant Professor
Graduate Institute of Ferrous & Eco Materials Technology
Department of Materials Science & Engineering
POSTECH, South Korea
Dr. Kyu-Young Park is an Assistant Professor at the Graduate Institute of Ferrous & Energy Materials Technology, POSTECH. His academic journey spans from earning a Bachelor of Science and Master of Materials Science at KAIST to a Ph.D. in Materials Science and Engineering from Seoul National University. He further honed my expertise as a Postdoctoral Research Fellow at both Seoul National University and Northwestern University, where he worked under the guidance of renowned experts like Prof. Mark Hersam. My research focuses on energy storage materials, particularly lithium-ion battery systems, where he explore the defect chemistry, phase transition behavior, and thermodynamic properties of cathode materials. He is skilled in structural analysis using advanced diffraction methods and electrochemical analysis of electrode materials. His work has been recognized internationally, including receiving the prestigious young scientist award for synchrotron radiation technology in Korea. He brings a deep commitment to advancing the field of materials science, aiming to develop innovative solutions for energy storage that are both efficient and sustainable.
