Abstract: A device for filling a battery cell with an electrolyte and for subsequently sealing the battery cell is disclosed. The device includes a process chamber that has a receiving opening in which the battery cell is at least partially accommodated, such that a filling opening of the battery cell is arranged in the process chamber. The chamber has an opening suitable for receiving a line for filling the battery cell. The process chamber is gas-tight and liquid-tight with the battery cell and line. The process chamber has a passage through which laser beams can pass to close the filling opening of the battery cell so that the battery cell can be filled with the electrolyte and then sealed. A method of using the device to fill a battery cell with electrolyte is also disclosed.

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; 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.