LITHIUM SULFUR SECONDARY BATTERY
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United States of America Patent
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Issued Date -
Oct 8, 2015
app pub date -
Mar 27, 2015
filing date -
Apr 4, 2014
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Abstract
A lithium sulfur secondary battery includes a positive electrode containing a sulfur-based positive electrode active substance, an electrolytic solution, a negative electrode containing a negative electrode active substance that occludes and releases lithium, and a polymeric film that covers a surface of the positive electrode and allows lithium cations to pass but does not allow polysulfide anions to pass.
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