LITHIUM BATTERIES Russian patent published in 2023 - IPC H01M10/52 H01M10/60 H01M4/485 

FIELD: electrical engineering.

SUBSTANCE: lithium-ion battery with an anhydrous electrolyte that provides ionic conductivity between the positive electrode and the negative electrode, and can be used to suppress thermal runaway of the battery during operation. Increasing stability of the lower energy lithium-ion battery to effectively suppress thermal runaway is a technical result that is achieved by adding an ion source capable of absorbing thermal energy caused by the rise in temperature of the lithium battery to the positive electrode to release a reactive cation, which stabilizes the lattice structure of the active material of the positive electrode, while the anion is selected from NO^-, Al(OH)₄^-, PO₄^3-, P₂O₇^4-, HCO₃^-, AlSiO₄^-, B₄O₇^2-, CO₃^2-, CF₃SO₃^-, SiO₃^-, PSS^-, NPO₄^2-, SO₃^2-, H₂PO₂^-, NPO₃^2-, P₂O₆^-, P₃O₉^3-, BO₂^-, BO^3-, P₄O₁₃^6-, SO₇^2-, S₂O₃^2-, SO₅^2-, S₂O₈^2-, S₂O₆^2-, S₂O₄^2-, P₃O₁₀^5-, B₂O₅^4-, H₂PO₄^-, SO₃C₄F₉^-, SO₂CF₃^- or S₂O₅^2-, the reactive cation is sodium or potassium, wherein the ion source is capable of absorbing thermal energy to release the reactive cation to react with the positive electrode active material and deactivate the positive electrode active material.

EFFECT: release of atomic oxygen can be avoided and thermal runaway of the lithium battery can be effectively suppressed.

14 cl, 3 dwg, 3 tbl