A methode for preparing iron sulfide composite electrode for positive electrode and Li/iron sulfide composite secondary battery

摘要

The present invention relates to a method for manufacturing a composite iron sulfide electrode for a positive electrode of a lithium secondary battery with improved electrode life, and to synthesize the active material synthesized by using a mechanical chemical method after weighing sulfur powder, iron powder and transition element powder as a raw material powder Steps;;A slurry manufacturing step of preparing a slurry by mixing the composite iron sulfide prepared in the active material synthesis step with carbon powder and a binder; A drying step of drying the slurry prepared in the slurry manufacturing step; And a battery manufacturing step of manufacturing a composite iron sulfide positive electrode after the drying step.;In addition, the lithium composite iron sulfide secondary battery produced as an iron sulfide electrode for a positive electrode of a lithium secondary battery manufactured by adding a transition element to improve electrode life as described above improves the electrode life which is a problem of the lithium iron sulfide secondary battery developed so far. You can.;Lithium battery, positive electrode, composite iron sulfide, active material, cobalt, nickel, slurry