A New Quasi-Solid Polymer Electrolyte for Next-Generation Na-O₂ Batteries: Unveiling the Potential of a Polyamide-Polyether System.

ABSTRACT: A novel quasi-solid polymer electrolyte (QSPE) composed of polyamide (PA) and polyethylene oxide (PEO), commercially known as Pebax1657, and combined with 1 M sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) in diethylene glycol dimethyl ether (diglyme, DEGDME), has been investigated for sodium-oxygen (Na-O₂) batteries. Pebax1657 QSPE exhibits high ionic conductivity (6.57 × 10^-4 S cm^-1 at room temprerature - RT), an oxidation onset potential of 4.69 V versus Na/Na⁺, and an enhanced Na⁺ transference number (t_Na ^⁺ ≈ 0.40). Structural analysis (Raman spectroscopy, differential scanning calorimetry, X-ray diffraction, small-angle X-ray scattering) confirms reduced PEO crystallinity and formation of orderly nanodomains, facilitating Na⁺

SUBMITTER: Yahia M 

PROVIDER: S-EPMC12376506 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature