Multi-scale Cathode Design Toward High Performance Li-ion Batteries

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.