WENG Wei (1994-), male, Doctoral candidate. E-mail: wengwei@nimte.ac.cn
Na11Sn2PS12 solid electrolytes were synthesized by a high-temperature quenching method, and the structures as well as electrochemical performance were investigated. A Na11Sn2PS12 phase with a certain amount of impurity can be obtained in quenching process. The content of impurity phase in the quenching precursors annealed at 430 ℃ decreases and the room-temperature ionic conductivity enhances from 0.34×10-4 S/cm to 6.26×10-4 S/cm. In addition, a prepared Na11Sn2PS12 possesses a low activation energy of 0.27 eV and an electronic conductivity of 2.25×10-8 S/cm, and an electrochemistry stability window between 0.8 V and 2.8 V. Also, Na11Sn2PS12 is used in all-solid-state sodium batteries, showing good electrochemical performances.
| 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 |