Waste bones derived nitrogen-doped carbon with high micropore ratio towards supercapacitor applications. Academic Article uri icon

abstract

  • Fabrication of high-performance electrodes from waste biomass has attracted increasing attention among the energy storage and conversion field. In this work, we have synthesized nitrogen-doped activated carbon by a simultaneous pyrolysis/activation method from waste bones. It is found that the specific surface area and pore structure of as-synthesized carbon depends on the carbonization temperature (500-800C), and the highest specific surface area is 1522m2g-1. The electrochemical properties of Pork bone, Blackfish bone, Eel bone based activated carbon (PBAC, BFAC, EBAC) mainly depend on their micro-/mesoporosity. Three samples PBAC-600, BFAC-600 and EBAC-600, which have higher ratio of micropore surface area and nitrogen content, exhibit enhanced specific capacitance of 263, 302 and 264Fg-1 in 6M KOH electrolyte. Furthermore, the assembled symmetric supercapacitors of PBAC-600 can deliver energy density as high as 7.0 and 26.2WhKg-1 in the aqueous and ionic liquid electrolyte, respectively. Such excellent performance can be attributed to the microporous structure, reasonable pore size distribution and nitrogen self-doping of the activated carbon. This research indicates that waste bones have great potential for mass fabrication of the activated carbon electrodes for energy storage applications.

published proceedings

  • J Colloid Interface Sci

author list (cited authors)

  • Niu, L., Shen, C., Yan, L., Zhang, J., Lin, Y. i., Gong, Y., ... Xu, S.

citation count

  • 101

complete list of authors

  • Niu, Lengyuan||Shen, Cheng||Yan, Lijin||Zhang, Jiahao||Lin, Yi||Gong, Yinyan||Li, Can||Sun, Chang Q||Xu, Shiqing

publication date

  • July 2019