POS7-0449
Synthesis of Fluorine-Free Binders for Dry Electrode of Battery using Sustainable Bio-derived Molecule
Topic
S7. Innovations in Polymeric Composites: From Design and Processing to Industrial Applications
When and Where
Oct 1, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Jinkee HONG
Ki Su KIM
Presenter(s)
MIN JEONG KIM (Kumoh National Institute of Technology)
Co-Author(s)
Abstract
Polymer binders are essential for maintaining the mechanical integrity and electrochemical stability of electrodes in next‑generation energy storage systems; however, conventional fluorinated binders exhibit poor degradability. In this study, a degradable elastomeric binder was synthesized via in situ polymerization of α‑lipoic acid (LA) with di‑vinyl crosslinkers within the cathode. Two crosslinkers—poly(ethylene glycol) diacrylate (PEGDA 700) and 1,4‑divinylbenzene (DIB)—were employed to investigate the effect of crosslinker chemistry. The PEGDA 700‑based system enhanced electrolyte affinity and ionic transport, whereas the DIB‑based system formed a rigid aromatic network that improved mechanical stability. Elastomeric binders with tunable crosslink densities were prepared by varying the PEGDA 700:LA and DIB:LA ratios. The resulting electrodes were evaluated by linear sweep voltammetry and mechanical analyses, revealing a clear correlation between polymer composition, electrochemical stability, and electrode integrity. This work highlights the potential of degradable elastomeric binders as sustainable alternatives for advanced energy storage applications.
