Binder for negative electrode of rechargeable lithium battery, negative electrode for rechargeable lithium battery including binder, and rechargeable lithium battery including negative electrode

A binder for a negative electrode of a rechargeable lithium battery, the binder comprising:

• a brush-like copolymer represented by Chemical Formula 1;
• wherein R1 and R2 independently comprise hydrogen;
• or a substituted or unsubstituted alkyl group,
• R3 to R6 independently comprise hydrogen;
• a substituted or unsubstituted alkyl group;
• or RaCOORb, wherein Ra is a substituted or unsubstituted alkylene group and Rb is a substituted or unsubstituted alkyl group;
• R7 is hydrogen, a substituted or unsubstituted alkyl group;
• or CRdReCOORf, wherein Rd, Re, and Rf independently comprise hydrogen;
• or an alkyl group;
• n1 is an integer in a range of about 1 to about 10,
• n2 is an integer in a range of about 2 to about 500,
• n3 is an integer in a range of about 1 to about 10, and
• n4 and n5 are each an integer in a range of about 10 to about 100.