Carrageenans as Sustainable Water-Processable Binders for High-Voltage NMC811 Cathodes.

ABSTRACT: Poly(vinylidene fluoride) (PVDF) is the most common binder for cathode electrodes in lithium-ion batteries. However, PVDF is a fluorinated compound and requires toxic N-methyl-2-pyrrolidone (NMP) as a solvent during the slurry preparation, making the electrode fabrication process environmentally unfriendly. In this study, we propose the use of carrageenan biopolymers as a sustainable source of water-processable binders for high-voltage NMC811 cathodes. Three types of carrageenan (Carr) biopolymers were investigated, with one, two, or three sulfonate groups (SO₃^-), namely, kappa, iota, and lambda carrageenans, respectively. In addition to the nature of carrageenans, this article also reports the optimization of the cathode formulations, which were prepare

SUBMITTER: Rolandi AC 

PROVIDER: S-EPMC10466266 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature