| 摘要 |
PURPOSE: An anode for a lithium-sulfur battery is provided to suppress the flow out of a polysulfide which is a charging/discharging intermediate product of the anode active material into an electrolyte according to introduction of an anion immobilization materials in the lithium-sulfur anode thereby the capacity retention rate of the lithium-sulfur battery is improved. CONSTITUTION: An anode for a lithium-sulfur battery comprises the followings: elemental sulfur (S8); anode active material which comprises sulfur series compound and a mixture thereof; a conductive material; a binder, and an anion immobilization material. A content of the anion immobilization material is 0.5-50 weight%; an average size of a particle of the anion immobilization material is 0.01-10 micron. The conductive material is selected from a group which comprises a graphite material, a carbon-based material and conductivity polymer. In addition, the lithium-sulfur battery comprises an anode, a cathode, a separator which is interposed between anode and cathode, and electrolyte. [Reference numerals] (AA) Volume (mAh/g electrode); (BB) Number of cycle; (CC) Implementation example 3; (DD) Implementation example 2; (EE) Implementation example 1; (FF) Comparison example 1 |
