Full
WANG Fangping (1973-), male, female, Ph.D., Associate Professor. E-mail: wangfp@nwnu.edu.cn
Outline
A series of porous carbon based supercapacitor electrode materials (GCO600) were synthesized via simple oxidative carbonization (GCO) with K2CO3 activation using grapefruit peel as a resource. The optimized product GCO600-14 has massive network pores and a specific surface area of 661.7 m2/g. In the three-electrode system, the specific capacitance of GCO600-14 is 413 F/g at 1 A/g, and the specific capacitance can still reach 289 F/g when the current density increases to 30 times, which is 70% of the initial value. The cycling stability has a capacitance retention of 96% after 5 000 cycles. For GCO600-14//GCO600-14 symmetric supercapacitor, the energy density is 26 (W·h)/kg at a power density of 720 W/kg and 20.2 (W·h)/kg at a power density of 20 800 W/kg, respectively. It is indicated that GCO600-14 could have potential application prospects in environmentally friendly energy storage materials.
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| 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 |
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