▎ 摘　　要

NOVELTY - Composite conductive agent slurry comprises first conductive agent, second conductive agent, adhesive and solvent, and the preparation method the slurry comprises (i) uniformly mixing the adhesive and solvent in a specific ratio to obtain the adhesive solution, (ii) adding equivalent amount of first conductive agent to the step (i), and uniformly dispersing to obtain a primary conductive agent dispersion, and (iii) adding an equivalent amount of second conductive agent to the step (ii), and uniformly dispersing to obtain the finished product. USE - The slurry is useful for silicon carbon cathode system (claimed). ADVANTAGE - The slurry: utilizes the high flexibility one-dimensional hollow linear structure of the single-wall carbon nano-tube to wrap the surface of the silicon carbon particles; combines inner and outer phase to form a three-dimensional structure to firmly lock the silicon particles inside; prevents the battery from expanding due to the pole piece in the charging and discharging process; has improved stability and dispersibility; indirectly reduces the content of the conductive agents and the cathode adhesive content; increases the contents of the active substance; improves the battery capacity; reduces the electrode resistance; and improves the battery rate performance.