Na₂Fe₃(SO₄)₄: A Zero-Strain Sustainable Positive Electrode Material for Na-Ion Batteries.

ABSTRACT: One of the challenges in the energy transition is minimization of the battery cost for energy grid storage. Na-ion batteries are a promising alternative to Li-based analogues thanks to low cost, abundance of constituents, and an already set-up industry. However, already commercialized positive electrode materials for Na-ion batteries (Na₃V₂(PO₄)₂F₃ and Na_xCu_1-y-zFe_yMn_zO₂) contain critical raw elements such as V, Cu, and Mn, boosting the research towards abundant Fe-based materials. In this work, we report a novel sodium iron sulfate phase, Na₂Fe₃(SO₄)₄ (NFS), synthesized by ball milling, as a positive electrode material. This new compound

SUBMITTER: Grebenshchikova A 

PROVIDER: S-EPMC12559453 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature