Separator having a polysulfide barrier layer for lithium-sulfur cells

1. A lithium-sulfur cell, comprising:

a lithium-containing anode;

a sulfur-containing cathode; and

a separator arranged between the lithium-containing anode and the sulfur-containing cathode, wherein the separator includes a base layer and a polysulfide barrier layer including at least one polymer having polysulfide affinity which forms a reversible ionic bond with a polysulfide and at least one polyolefin-polyether copolymer, the polysulfide barrier layer formed on a side of the separator facing the sulfur-containing cathode.

2. The lithium-sulfur cell of claim 1 , wherein the polysulfide barrier layer includes a mixture of the at least one polymer having polysulfide affinity and at least one polysulfide-tight material.

3. A lithium-sulfur cell, comprising:

a lithium-containing anode;

a sulfur-containing cathode; and

a separator arranged between the lithium-containing anode and the sulfur-containing cathode, the separator including a base layer and a polysulfide barrier layer, the polysulfide barrier layer formed on a side of the separator facing the sulfur-containing cathode from a mixture of at least one polymer having polysulfide affinity and at least one polysulfide-tight material, wherein

the polysulfide barrier layer includes at least one polyolefin-polyether copolymer,

the polysulfide barrier layer is formed on a side of the separator facing the sulfur-containing cathode, and

during a synthesis of the mixture of at least one polymer having polysulfide affinity and at least one polysulfide-tight material, ceramic particles are inserted into a reaction product of the synthesis.