| 摘要 |
The present invention relates to a method for preparing a composition for forming a negative electrode of a lithium secondary battery, a negative electrode prepared by this preparation method, and a lithium secondary battery including the same. The preparation method includes: a step of preparing a dispersion solution by mixing with each other and dispersing a conductive material and a cellulose-based thickener in a solvent; and a step of adding a negative electrode active material and a binder to the dispersion solution and mixing the negative electrode active material and the binder with the dispersion solution, in which the conductive material is formed by primary particle coagulation and includes secondary particles having a BET specific surface area of at least 100 m^2/g and having an average particle diameter (D_50) of one micrometer or less. By the method for preparing the composition for forming a negative electrode of a lithium secondary battery, the conductive material that is excellent in inter-active material conductivity improvement can be uniformly dispersed and included in the composition without binder adsorption, and thus electrode resistance in the negative electrode can be reduced, adhesive strength can be improved, and output characteristics and life characteristics of the lithium secondary battery can be improved. |
