LITHIUM SULFUR BATTERY

摘要

The present invention relates to a lithium sulfur battery, the battery comprising an anode and a cathode arranged facing each other, a separator interposed between the anode and cathode, and electrolyte, and additionally comprising: a lithium ion conductive polymer membrane positioned between the cathode and separator, and having a sulfonic acid group (-SO3H); and at least one membrane, from among metal oxide membranes, positioned between the anode and separator, and thus damage to electrode active material is reduced, and as the spread of lithium polysulfide to the anode is blocked, enhanced lifespan characteristic can be attained, and additionally, as dendritic growth in the anode is suppressed, improved safety can be attained.