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In order to improve the electrochemical performance of stannous sulfide(SnS) anode material for lithium batteries, SNSS/DA precursor was prepared by one-step hydrothermal method with niobium cation and selenium anion doped SnS, and then SNSS/C composite was prepared by heat treatment. The effects of carbon nanolayer and co-doping mechanism on the conductivity and battery cycle stability of SNSS/C composite were investigated. The results show that SNSS/C composites have good coating morphology and carbon coating structure, and the thickness of carbon nanolayer is 10~30 nm. By doping two elements, Nb and Se, the crystal volume can be increased, so that lithium ions can obtain a broader channel in the process of embedding/deembedding, and further enhance the conductivity of the material and the diffusion efficiency of lithium ions. The electrochemical performance of SNSS/C material is excellent, the specific discharge capacity of the first cycle is 814.6 mAh/g, and the Coulomb efficiency is 96.3%.
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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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