Fluorine-Free Binders for Dry Electrode of Battery
발표자
김민정 (국립금오공과대학교)
연구책임자
최청룡 (국립금오공과대학교)
공동저자
김민정 (국립금오공과대학교), 최청룡 (국립금오공과대학교)
초록
내용
Polymer binders are critical for the mechanical and electrochemical stability of electrodes, yet conventional fluorinated binders suffer from poor degradability. Herein, a degradable elastomeric binder was synthesized via in situ polymerization within the cathode using α-lipoic acid (LA) and di-vinyl crosslinkers. Poly(ethylene glycol) diacrylate (PEG, Mn ≈ 700) and 1,4-divinylbenzene (DIB) were used to examine the effect of crosslinker chemistry. PEG700-based binders enhanced electrolyte affinity, while DIB-based binders emphasized mechanical stability. Crosslink density was controlled by varying PEG700:LA and DIB:LA ratios, and the resulting electrodes were evaluated by linear sweep voltammetry and mechanical analyses.