Citric Acid as a Small Molecule Binder for Si-Based Li-Ion Battery Anode Materials

• DOI: 10.1149/1945-7111/adb185
• Publication Date: 2025-02-03T22:54:00Z
• Authors: Mina Salehabadi; K. Medhi; U. Werner-Zwanziger; M. N. Obrovac

Abstract In this study, citric acid (CA) dissolved in propylene glycol (PG) was shown to be an effective binder/solvent system for Si-based anode materials Li-ion batteries. system, PG serves both as a slurry solvent and provides viscosity the inhibit settling of active particles proper rheology during coating process, while small CA molecule binder/artificial solid electrolyte interphase. After 50 cycles, SiO/carbon black/CA electrodes had higher capacity retention (93%) than conventional with lithium polyacrylate (LiPAA) polymeric binder (68%), due superior maintenance cohesion particles. This demonstrates that molecules may used binders when is can take on role maintaining rheology.