WANG Xuehui (1996-), female, Master candidate. E-mail: 17865316709@163.com
Potassium-ion batteries (KIB) are expected to replace lithium-ion batteries (LIB) as a new generation of energy storage devices due to their high energy density and abundant potassium resources. Carbon material is considered as a potential KIB anode material due to its low cost, easy availability and environment friendly. However, the development of carbon materials for KIB is restricted due to the presence of some problems (i.e., huge volume expansion and structural deformation during intercalation/deintercalation process), thus leading to low reversible capacity, inferior rate performance, and poor cycling stability. In order to solve the problems and increase the KIB performance, some approaches were summarized, such as heteroatom doping, structural designing and so on. This review summarized recent research progress on different types of carbon anode materials for KIB, including graphite, graphene, hard carbon, soft carbon and porous carbon. In addition, the critical issues, challenges, and perspectives for the development of KIB were also proposed.
| 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 |