ZHANG Wei (1996-), male, Master candidate. E-mail: 1435048976@qq.com
Carbon fiber based electrodes were prepared by a solvent exchange method with natural cellulose fibers as versatile supports of lignin nanoparticles (LNPs) to uniformly in-situ load LNPs on the surface of fibers. The morphology, specific surface area, thermal stability, phase composition, structure and electrochemical performance of carbon fiber electrodes were investigated by X-ray diffraction, scanning electron microscopy, nitrogen adsorption, thermogravimetric analysis, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and electrochemical tests, respectively. The results show that the prepared carbon fiber based electrode has a maximum specific capacitance of 7.88 F/g at an initial mass ratio of LNPs to cellulose fiber of 1∶10, which is greater than that of the control biomass carbon fiber (0.60 F/g) without loading LNPs. After 10 000-cycle test (10 A/g), the capacitance retention is still 93%. Also, LNPs loaded on the surface of fibers can effectively endow composite carbon fiber electrodes with a high specific surface area and a high carbon content, which can provides a possible path for the effective utilization of lignin in energy fields.
| 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 |