| 摘要 |
PURPOSE: Provided a positive electrode and a lithium secondary battery comprising the same, which has excellent cycle-life characteristics and capacity property. CONSTITUTION: The positive electrode for a lithium secondary battery includes a conductive material containing a carbonic material treated with an acid; and a positive electrode active material. Preferably, the carbonic material is treated with a solution of the acid selected from the group consisting of nitric acid, hydrochloric acid, phosphoric acid, sulfuric acid, acetic acid and boric acid, which has a concentration of 10 to 80 wt%. The positive electrode active material is a sulfur-series compound selected from the group consisting of an elemental sulfur(S8), Li2Sn(n1), an organic sulfur compound and a carbon-sulfur polymer((C2Sx)n, wherein x is 2.5 to 50, n 2), or a mixture thereof.
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