Abstract: According to the invention, an electrolyte is provided for an alkali-sulfur battery. An alkali-sulfur battery is also provided, which contains the electrolyte according to the invention. The electrolyte according to the invention contains a mixture of a sulphone and a fluorine-containing ether in a volume ratio of #1:4 (v:v). Through the use of said electrolyte, the shuttling of polysulphide species from the cathode to the anode can be effectively suppressed, without the use of LiNO3. Through the electrolyte in alkali-sulfur batteries, a high coulombic efficiency, long-term stability (low self-discharge) and cycle durability can be achieved even without the use of LiNO3. Coloumbic efficiency, long-term stability and cycle durability can be further improved through the use of a cathode which contains an additive for uniform distribution of polysulphide inside the cathode. In addition, uses of components of the alkali-sulfur battery according to the invention are also disclosed.

Abstract: According to the invention, an electrolyte is provided for an alkali-sulfur battery. An alkali-sulfur battery is also provided, which contains the electrolyte according to the invention. The electrolyte according to the invention contains a mixture of a sulfone and a fluorine-containing ether in a volume ratio of #1:4 (v:v). Through the use of said electrolyte, the shuttling of polysulfide species from the cathode to the anode can be effectively suppressed, without the use of LiNO3. Through the electrolyte in alkalisulfur batteries, a high coulombic efficiency, long-term stability (low self-discharge) and cycle durability can be achieved even without the use of LiNO3. Coloumbic efficiency, long-term stability and cycle durability can be further improved through the use of a cathode which contains an additive for uniform distribution of polysulfide inside the cathode. In addition, uses of components of the alkali-sulfur battery according to the invention are also disclosed.

Abstract: A Li—S battery including a cathode and an anode and at least one of a lithium-containing liquid electrolyte, gel electrolyte, and solid electrolyte disposed between the cathode and the anode. The cathode includes at least one of an electrically conductive carbon material, an electrochemically active cathode material that comprises sulphur, and at least partially fibrillar plastic material. The anode includes a conducting substrate which is coated at least in regions with at least one of silicon and tin. A method for operation thereof.

Abstract: A Li—S battery including a cathode and an anode and at least one of a lithium-containing liquid electrolyte, gel electrolyte, and solid electrolyte disposed between the cathode and the anode. The cathode includes at least one of an electrically conductive carbon material, an electrochemically active cathode material that comprises sulphur, and at least partially fibrillar plastic material. The anode includes a conducting substrate which is coated at least in regions with at least one of silicon and tin. A method for operation thereof.

Abstract: An alkali-chalcogen battery that includes a cathode that includes at least one of at least one chalcogen and at least one alkali-chalcogen compound, and an anode. At least one of an alkali metal-containing liquid electrolyte, gel electrolyte and solid electrolyte is disposed between the anode and the cathode. Also, a cation-selective separator is disposed at least in regions between the anode and the cathode, the separator being permeable for alkali metal ions and impermeable for polychalcogenide ions (Zn2? with n?2, Z representing the chalcogen), and the separator having a maximum layer thickness of 30 ?m.