Abstract: A rechargeable battery cell has an electrolyte comprising a conducting salt. The electrolyte is based on SO2 and the positive electrode comprises an active material of the composition AxM?yM?z(XO4-mSn), wherein A is an alkali metal, an alkaline earth metal, a metal of group 12 of the periodic table or aluminum, preferably sodium, calcium, zinc, particularly preferably lithium. M? is at least one metal selected from a group consisting of titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper and zinc. M? is at least one metal selected from a group consisting of the metals of groups 2, 3, 4, 5, 6, 10, 11, 12, 13, 14, 15 and 16 of the periodic table. X is phosphorus or silicon. x is greater than 0. y is greater than 0. z is greater than or equal to 0. n is greater than 0 and m is less than or equal to n.

Abstract: A rechargeable electrochemical battery cell with a housing, a positive electrode, a negative electrode and an electrolyte which contains SO2 and a conducting salt of the active metal of the cell, whereby at least one of the electrodes contains a binder chosen from the group: Binder A, which consists of a polymer, which is made of monomeric structural units of a conjugated carboxylic acid or of the alkali salt, earth alkali salt or ammonium salt of this conjugated carboxylic acid or a combination thereof or binder B which consists of a polymer based on monomeric styrene structural units or butadiene structural units or a mixture of binder A and B.

Abstract: This disclosure relates to a rechargeable battery cell, comprising: an active metal; at least one positive electrode; at least one negative electrode comprising an active material selected from the group consisting of an insertion material made of carbon, an alloy-forming active material, an intercalation material which does not comprise carbon, and a conversion active material; an SO2 based electrolyte comprising a first conducting salt which has the formula (I), wherein: M is a metal selected from the group consisting of alkali metals, alkaline earth metals, metals of group 12 of the periodic table of the elements, and aluminum; x is an integer from 1 to 3; R1, R2, R3 and R4 are selected independently of one another from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, C6-C14 aryl and C5-C14 heteroaryl; and Z is aluminum or boron.

Abstract: This disclosure relates to a rechargeable battery cell comprising an active metal, at least one positive electrode having a discharge element, at least one negative electrode having a discharge element, a housing and an electrolyte, the negative electrode comprising metallic lithium at least in the charged state of the rechargeable battery cell and the electrolyte being based on SO2 and comprising at least one first conducting salt which has the formula (I), M being a metal selected from the group formed by alkali metals, alkaline earth metals, metals of group 12 of the periodic table of the elements, and aluminum; x being an integer from 1 to 3; the substituents R1, R2, R3 and R4 being selected independently of one another from the group formed by C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, C6-C14 aryl and C5-C14 heteroaryl; and Z being aluminum or boron.

Abstract: This disclosure relates to a rechargeable battery cell comprising an active metal, at least one positive electrode, at least one negative electrode, a housing and an electrolyte, the positive electrode being designed as a high-voltage electrode and the electrolyte being based on SO2 and at least one first conducting salt having the formula (I), M being a metal selected from the group formed by alkali metals, alkaline earth metals, metals of group 12 of the periodic table of the elements, and aluminum; x being an integer from 1 to 3; the substituents R1, R2, R3 and R4 being selected independently of one another from the group formed by C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, C6-C14 aryl and C5-C14 heteroaryl; and Z being aluminum or boron.

Abstract: This disclosure relates to an SO2-based electrolyte for a rechargeable battery cell containing at least one conducting salt of the Formula (I) wherein M is a metal selected from the group consisting of alkali metals, alkaline earth metals, metals of group 12 of the periodic table of the elements and aluminum; x is an integer from 1 to 3; the substituents R, R2, R3 and R4 are each independently selected from the group consisting of C1-C10 alkyl, C2-C1 alkenyl, C2-C1 alkynyl, C3-C10 cycloalkyl, C6-C14 aryl, and C5-C14 heteroaryl; and Z is aluminum or boron.