PROCESS FOR PREPARING COMPOSITE CATHODE FOR LITHIUM ION CELL

The present application provides a process for preparing a composite cathode for a lithium ion cell. The process comprises the steps of (i) forming a cathode slurry in a planetary mixing machine by mixing an active material, conducting diluent and binder; (ii) coating the slurry over an aluminum foil substrate in a coating machine at a speed of 0.2-0.8 m/min; and (iii) calendering the cathode in a calendering machine at a temperature of 50-150 DEG C. The present invention also relates to a system for the process. The cathode has peel strength of greater than 200 gf/cm and moisture content less than 350 ppm. The lithium ion cell with the cathode disclosed in the invention and a graphite anode exhibits a capacity retention of >80% at 100% depth-of-discharge at C/2-1C charge-discharge rate when tested for 2000 cycles. 本申请提供了一种制备用于锂离子电池的复合正极的方法，包括以下步骤：(i)通过混合活性材料、导电稀释剂和粘合剂，在行星式混合机中形成正极浆料；(ii)在涂覆机中以0.2-0.8m/min的速度将浆料涂覆在铝箔基板上；(iii)在50-150℃温度下在压延机中压延正极。本申请还公开了一种用于此目的的系统。正极具有大于200gf/cm的剥离强度和小于350ppm的水分含量。具有本发明公开的正极和石