Polyetherureas as aqueous binders for Li ion batteries.

ABSTRACT: We report here the application of polyetherureas as a new class of aqueous binder for the LiFePO₄ positive electrode material in lithium-ion batteries. Polyetherureas have been synthesized by ruthenium-catalyzed dehydrogenative coupling of polyethylene glycol diamine and methanol avoiding conventionally used toxic diisocyanate feedstock. The best binder performance was obtained when polyetherurea was used in combination with SBR (Styrene-Butadiene Rubber), exhibiting a coulombic efficiency of ∼99.9% and a cell polarization of 30 mV. Remarkably, the combination of polyetherurea/SBR as a binder demonstrates comparable performance as that of CMC (carboxymethyl cellulose), which is a commonly used aqueous binder for lithium-ion batteries. Evidence of the involvement of polyetherurea

SUBMITTER: Saini G 

PROVIDER: S-EPMC12645821 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature