[O1-12]
Mixed Ion-Electron Conductive Polymer Interlayers for Sustainable Lithium Batteries
발표자최웅식 (포항공과대학교)
연구책임자박문정 (포항공과대학교)
Abstract
Sulfur and redox-active organic compounds have been widely studied as cathode for lithium batteries due to low cost and sustainability. However, their application is limited by poor electronic conductivity, sluggish Li+ transport and active material dissolution, leading to poor cycling stability. Although various interlayers have been introduced to enhance redox kinetics, progress has been slow. In this study, we developed mixed ion-electron conducting interlayers via an ice-templating method to simultaneously enhance electron and ion transport and suppress shuttle effects. This interlayer consists of highly ordered porous polyaniline nanosheets decorated with Li+ conducting polyethylene glycol nanoparticles along the pore walls. The interlayer exhibited both high electrical (6.0 S cm-1) and ionic (0.22 mS cm-1) conductivity, while mitigating the shuttle effects by confining active materials within the porous structures. These led to enhanced battery performance of lithium batteries.