Black aspergillus-derived highly porous carbon fibers for capacitive applications

作者：Yang, Tingting; Xi, Yunlong; Zhu, Yukun; Li, Junzhi; Pan, Xuexue; Izotov, V. Yu.; Guo, Qing; Han, Wei^*

来源：Journal of Materials Science: Materials in Electronics , 2017, 28(23): 17592-17600.

DOI：10.1007/s10854-017-7696-6

• SUPERCAPACITOR ELECTRODE MATERIALS
• ACTIVATED CARBON
• MESOPOROUS CARBONS
• ENERGY-STORAGE
• SURFACE-AREA
• RICE HUSK
• PERFORMANCE
• BIOMASS
• PYROLYSIS
• WASTE

The increasing demand for high-performance supercapacitors has aroused great interest in fabricating materials with excellent specific capacitance and cycling stability. Here we report a porous activated carbon (PAC) derived from the pyrolysis of the renewable filamentous fungi in an inert atmosphere. PAC exhibits a high specific surface area of 1800 m(2) g(-1) with hierarchical structures. The N doped PAC electrode shows a remarkable gravimetric capacitance of 298 F g(-1), and excellent cycling stability with 100% capacitance retention after 10,000 cycles. In addition, the rate capability of this material is pretty good and better than that of previously reported graphene and activated carbon-based materials. Furthermore, the as-assembled symmetric supercapacitor device exhibits good gravimetric energy density of 10.32 W h Kg(-1). This work provides a new sustainable source of filamentous fungi for fabricating high performance porous carbon materials for supercapacitors.

• 出版日期2017-12
• 单位吉林大学