| 摘要 |
The purpose of the invention is to obtain cobalt hydroxide and cobalt oxide, each having high aggregability even if a secondary particle size is large. The invention is cobalt hydroxide characterized by being in the form of secondary particles obtained by aggregating primary particles, comprising, as the primary particles constituting the secondary particles, primary particles in the form of a plate, a pillar, or a needle having a major axis length determined by SEM image analysis of 1.5 µm or more, and having a tap density of 0.80 g/mL or more. |
