ZHANG Qiangqiang (1993-), male, Doctoral candidate; E-mail: zhangqiangqiang16@gmail.com
SU Xing (1990-), male, Postdoctor. suxingsci@outlook.com
An organic-inorganic composite polymer electrolyte (CPE) was constructed via introducing an active filler of Na-β''-Al2O3 into a solid-state polymer electrolyte (SPE) composed of poly(ethylene oxide) (PEO) and sodium bis(trifluoromethanesulfonyl)-imide (NaTFSI). The phase composition, ionic conductivity, Na+ transference number, and electrochemical stability were investigated. The electrochemical properties of SPE and CPE in Na|Na3V2(PO4)3@C solid-state sodium batteries were obtained. The results show that the CPE has a greater Na+ transference number of 0.71 than SPE (i.e., 0.19) and a higher Na+ conductivity of 8.19×10-4 S/cm than SPE (i.e., 1.65×10-4 S/cm) at 80 ℃. The CPE exhibits a superior cycling stability with capacity retentions of 93.9% after 100 cycles at 0.5 C and 74.0% after 500 cycles at 2.0 C in Na|CPE|Na3V2(PO4)3@C solid-state batteries.
| 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 |