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The preparation of nickel, cobalt and manganese ternary precursors by coprecipitation method was studied. The effects of ammonia concentration, system pH, reaction time and reaction temperature on the properties of the precursors prepared by coprecipitation method were investigated. The results show that under the optimal conditions of ammonia concentration of 1 mol/L, pH=12, reaction temperature of 55 ℃ and reaction temperature of 28 h, the prepared precursor products have good particle size distribution, uniform spheroid shape and dense crystallization. The first discharge capacity of the cathode material after calcination is 169.14 mAh/g and the first efficiency is 88.32% under the charge and discharge system of 2.8~4.4 V and 0.2 C.
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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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