Lithium sulfur battery

• Main Authors: JANG MINUL, SONG MYEONG-HUN, CHOI JUNG-HUN, PARK CHANG-HUN, KIM TAEK-GYOUNG, YANG DOO-KYUNG, SON BYONG-KUK
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

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. 本发明涉及种锂硫电池，所述电池包含：彼此对向布置的正极和负极；置于所述正极与所述负极之间的隔膜；和电解质，并且还包含如下膜中的至少种以上的膜：位于所述正极与所述隔膜之间并具有磺酸基(-SOH)的锂离子传导性聚合物膜；和位于所述负极与所述隔膜之间的金属氧化物膜，因此使电极活性材料损失降低，通过阻断多硫化锂向所述负极的扩散而获得改善的寿命特性，且除此之外，通过抑制所述负极中的枝晶生长而获得提高的安全性。