In Figure 3, it can be found that most of the Co3O4 remained intact and approximately spherical after the degradation reaction, but some fragments were mixed in the intact Co3O4.
In Figure 3, it can be found that the vast majority of Co3O4s maintain a complete approximate spherical shape after the degradation reaction, but some fragments are mixed in the complete Co3O4.
In Fig. 3, it can be found that most Co3O4 keep a complete spherical shape after the degradation reaction, but there are some fragments in the complete Co3O4.<br>