WEI Cheng (1996-), female, Master candidate. E-mail: zlljoy@126.com
Studies on sodium-ion battery originated from the 1970s and 1980s, but it has not been paid much attention due to its low energy density. With the increasing shortage of lithium resources and the rising cost of lithium-ion battery preparation, sodium ion battery becomes a hot spot in the field of energy storage due to the abundant sodium resources, high energy conversion efficiency, long cycle life and good safety performance. Prussian blue analogues (PBAs) have excellent sodium storage properties due to their unique open framework structure, abundant sodium storage sites and large sodium ion migration channels. However, crystal water and structural defects are easy to occur in the synthesis process, leading to the decline of electrochemical properties. The structure and electrochemical characteristics of PBAs were introduced, and the preparation and modification methods were represented. In addition, the future development of PBAs as acathode for sodium ion battery was also prospected.
| 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 |