BATTERY BASED ON ORGANOSULPHUR COMPOUNDS Russian patent published in 2018 - IPC H01M6/16 H01M4/06 H01M4/36 H01M4/60 H01M10/56 

FIELD: electricity.

SUBSTANCE: invention relates to a battery comprising: a) an anode comprising an anode active material comprising sodium, lithium or an alloy or composite of at least one of sodium or lithium with at least one other metal for providing ions; b) a cathode comprising a cathode active material comprising elemental sulphur, elemental selenium or a mixture of elemental chalcogens; and c) an intermediate separator element positioned between the anode and the cathode acting to separate liquid or gel electrolyte solutions in contact with the anode and cathode, through which metal ions and their counterions move between the anode and cathode during charge and discharge cycles of the battery; wherein the liquid or gel electrolyte solutions comprise a non-aqueous polar aprotic solvent or polymer and a conductive salt and at least one of the following conditions is met: (i), (ii) or (iii): (i) at least one of the liquid or gel electrolyte solutions additionally comprise at least one organosulphur compound; (ii) the cathode is additionally comprised of at least one organosulphur compound; (iii) the intermediate separator element comprises a functionalised porous polymer containing at least one organosulfur species; wherein the organosulphur compound. Organosulphur compound is selected from the group consisting of an organic polysulphide of formula R¹-S-S_n-R², where R¹ and R² are independently a C₁-C₂₀ organic fragment which may be linear, branched or cyclic aliphatic or aromatic, and which may optionally contain one or more functional groups, including N, O, P, S, Se, Si, Sn, halogen and/or metal, and n is an integer equal to or greater than 1 and an organic thiolate of formula R¹-SM or an organic polythiolate of formula R¹-SS_n-M, where R¹ is a C₁-C₂₀ organic fragment which may be a linear, branched or cyclic aliphatic or aromatic and which may optionally contain one or more functional groups, including N, O, P, S, Se, Si, Sn, halogen and/or metal, where M is lithium, sodium, quaternary ammonium or quaternary phosphonium, and n is an integer equal to or greater than 1.

EFFECT: battery has improved performance during repeated charge and discharge cycles.

11 cl, 1 dwg, 13 ex