Highly Selective Li+ Transport

DOI: https://doi.org/10.54985/peeref.2401w6102874

Kyeong-Seok Oh · Jun 02, 2022

This presentation highlights research on Highly Selective Li+ Transport for developing high-energy-density batteries, crucial for electric vehicles . It addresses the challenges of conventional Li-ion batteries, focusing on combining high Ni cathodes with Li metal anodes. However, issues like transition metal ion release from high Ni cathodes and dendritic Li growth due to poor electrochemical compatibility with liquid electrolytes are identified.To overcome these, the presentation discusses:Transition metal-ion chelating polymer: Utilizing PVA polymer with metal-ion chelating moiety based on Le Chatelier's principle to suppress additional Mn2+ and Ni2+ ions.Single-ion conductors: Emphasizing the role of Li+ in redox reactions and using larger counter anions for easier dissociation of Li salts, thereby increasing Li+ transference.The research aims to achieve highly selective Li+ transport by focusing on transition metal-ion chelation and single Li+ conduction.