Method of fabricating lithium ion secondary battery using carbon nanotube and lithium ion secondary battery fabricated by the same

摘要

PURPOSE: A method for preparing a lithium ion secondary battery by using a carbon nanotube and a lithium ion secondary battery prepared by the method are provided, wherein the battery shows a high capacity and a stable repeating use efficiency. CONSTITUTION: The method comprises the steps of (S10) preparing a carbon nanotube material; (S30) adding a conductive material and a binder to the carbon nanotube material to form a carbon nanotube binder body; and (S50) binding the carbon nanotube binder body with a current collector for a lithium ion secondary battery to form a carbon nanotube electrode. Preferably the carbon nanotube is (S20) heated at 500-3,000 deg.C before it is formed into a carbon nanotube binder body. Preferably the carbon nanotube binder body comprises 5-20 wt% of a binder and 10-20 wt% of a conductive material; and comprises further a solvent. Preferably the conductive material is graphite powder or conductive carbon black.