| 摘要 |
PROBLEM TO BE SOLVED: To provide a sulfur cathode of a lithium sulfur battery to which hetero binder is applied.SOLUTION: A cathode composition of a lithium sulfur secondary battery includes sulfur, conductive material, non-aqueous surface contact binder, and aqueous point contact binder. The surface contact is contacting by surface to sulfur particle or conductive material particle, and the point contact is contacting by point to the sulfur particle or the conductive material particle. There are provided (1) a step for manufacturing a primary slurry by mixing sulfur, conductive material, solvent, and non-aqueous surface contact binder together, (2) a step for manufacturing a primary compound by drying and crushing the primary slurry, (3) a step for manufacturing a secondary slurry by mixing the primary compound, conductive material, solvent, and aqueous point contact binder together, and (4) a step for coating a cathode plate with the secondary slurry. |
