Binder, and electrode and lithium secondary battery comprising same

A method for preparing an electrode slurry, comprising:

• (i) providing an electrically conductive material;
• (ii) providing an electrode active material;
• (iii) providing a binder;
• and
• (iv) mixing the electrically conductive material, the electrode active material and the binder in a solvent to form a slurry;
• wherein the slurry has a solids content of 27.2% to 27.5%;
• wherein the binder consists of a random copolymer including a first block and a second block;
• wherein the first block is PAA (polyacrylic acid);
• wherein the second block is mono-methyl polyethylene glycol acrylate;
• wherein the random copolymer comprises 50 wt. % to 90 wt. % of the first block and 10 wt. % to 50 wt. % of the second block;
• wherein a weight ratio of the first block to the second block is 80:20;
• and
• wherein the binder has a weight-average molecular weight of 150,000 to 700,000.