| 摘要 |
PROBLEM TO BE SOLVED: To provide a process of manufacturing a composite particle for a positive electrode of an electrochemical element, excellent in dispersion of a conductive agent even when a water type slurry is used, and having low resistivity when it is made to be a battery.SOLUTION: The process of manufacturing a composite particle for a positive electrode of an electrochemical element includes the steps of: obtaining a slurry by dispersing a positive electrode active material, a conductive agent, and a binder into water; and obtaining a granulation particle by spray drying and granulating the slurry, wherein a ratio of degree of hydrophobicity (a positive electrode active material/a conductive agent) of the positive electrode active material and the conductive agent obtained by a methanol method is 0.5 or more and 1.5 or less. |
