WANG Weizhe (1996-), male, Master candidate. E-mail: 1427862719@qq.com
The composite polymer solid electrolytes (CPE) were prepared by a solution-casting and hot-pressing method. Na-β-Al2O3 and g-C3N4 particles were incorporated into a polyoxyethylene and polycaprolactone blended polymer electrolyte to obtain the CPE. The microstructures, chemical and electrochemical properties of the composite electrolytes were investigated. The composite electrolyte with a high conductivity at room temperature, a high voltage stability, and a dendrite suppression capability is obtained via optimizing the mass ratio of each component, especially g-C3N4. At 50 ℃, the symmetric cells with metallic Na electrodes exhibit a good long-term cycling stability at a current density of 0.1 mA/cm2. The all-solid-state cells with Na3V2(PO4)3@C positive electrode and Na/C composite negative electrode maintain a specific capacity of about 107 mA·h/g at 0.2 C.
| 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 |