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Outline
Mn3O4 for lithium-ion batteries was synthesized by suspension oxidation using metallic manganese powder. The effects of experimental conditions, including ammonium chloride concentration, ammonia concentration, solid-liquid ratio, reaction temperature, air flow rate and stirring speed, on the particle size and tap density of Mn3O4 were investigated. The results show that under the optimal conditions, including ammonium chloride concentration of 6 g/L, solid-liquid ratio of 0.3∶1, reaction temperature of 70 ℃, air flow rate of 700 mL/min, and stirring speed of 400 r/min, the as-prepared product is spinel-type Mn3O4 with quasi-spherical particles, which has a D50 particle size of 9.69 μm, tap density of 2.82 g/cm3, specific surface area of 0.399 m2/g, and manganese content of 71.5%. The contents of impurity elements such as S, Fe and Ca therein all meet the requirements in Manganese Tetroxide for Lithium Batteries (YB/T 4736—2019).
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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