Solution-combustion synthesis of Na<sub>3</sub>(VO<sub>1-x</sub>)<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>1+2x</sub> as a positive electrode material for sodium-ion batteries.
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ABSTRACT: Sodium-vanadium fluorophosphates (NVPF) comprise a family of highly potent positive electrode materials for sodium-ion batteries, combining high energy density due to their high operating potential and good high-rate performance provided by NASICON structure. In this study, a self-combustion approach to synthesise Na3(VO1-x)2(PO4)2F1+2x (0 ≤ x ≤ 1) is reported. The method described here is based on a citrate-nitrate combustion process. As a result of the synthesis, phase-pure NVPF with uniform morphology and average grain size of 98 nm is obtained. Moreover, the self-combustion method implemented in this study results in the acquisition of a powder with excellent performance in Na-ion systems, showing high capacity (ca. 111
SUBMITTER: Grabowski O
PROVIDER: S-EPMC12325671 | biostudies-literature | 2025 Aug
REPOSITORIES: biostudies-literature
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