A lithium ion positive electrode material doped with tin ions and fluorine ions and a preparation method thereof
By doping F- and Sn4+ into lithium-rich Mn-based disordered rock salt cathode materials, a lithium-ion cathode material with the chemical formula Li1.3Mn0.5-0.5xNb0.2-0.5xSnxO1.8F0.2 was prepared, solving the problems of structural instability and lithium-ion diffusion kinetics, and achieving high specific capacity and good cycle stability.
CN121885607BActive Publication Date: 2026-06-02CHANGCHUN UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGCHUN UNIV
- Filing Date
- 2026-03-18
- Publication Date
- 2026-06-02
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Figure CN121885607B_ABST
Abstract
The application discloses a lithium ion positive electrode material doped with tin ions and fluorine ions and a preparation method thereof. 1.3 Mn 0.5‑0.5x Nb 0.2‑0.5x Sn x O 1.8 F 0.2 , wherein x is 0.02, 0.05, 0.1, 0.15 or 0.2. The application relates to the technical field of lithium ion batteries, and has the beneficial effect that the lithium ion positive electrode material has high specific capacity, has unique three-dimensional ion transmission channels, and enables lithium ions to have better transmission efficiency; and the positive electrode material has excellent stability, which promotes the reversible oxidation-reduction reaction of oxygen. The positive electrode material also has good economic benefits and flexible component characteristics, and does not need to use expensive metal materials.
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