abstract |
A random copolymer comprising a repeating unit represented by Formula 1 and a repeating unit represented by Formula 2 in a molar ratio of 1:99 to 99:1 and having a polymerization degree of 10 to 5000, a protective negative electrode including the same, a lithium battery, and A method for its preparation is presented: <Formula 1><Formula2> In the above formulas, CY1, CY2, A, X, R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and Y - refer to the detailed description of the invention. |