Full
Outline
To achieve high-value utilization of silicon monoxide tailings (SiO-W), SiO-W@G composite anode materials for Li-ion batteries were prepared by granulating the composite of SiO-W and graphite with pitch as a binder, and their electrochemical performances were then compared with those of conventional SiO@G anode materials. The results show that SiO-W@G, with particle size (D50=11.390 μm), is smaller than SiO@G (16.831 μm) and has larger specific surface area (15.66 m2/g vs. 10.80 m2/g), but both have the same tap density (0.99 g/cm3). SiO-W is uniformly composited with graphite, and there is no obvious difference in crystal structure. Electrochemical tests show that SiO-W@G delivers a specific capacity of 443.55 mAh/g and an initial coulombic efficiency of 85.56%, which are close to those of SiO@G (463.65 mAh/g, 86.39%). It is concluded that the granulation of composite can effectively enable the high-value utilization of silicon monoxide tailings, presenting good prospects for industrial application.
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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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