Template-free preparation of anthracite-based nitrogen-doped porous carbons for high-performance supercapacitors and efficient electrocatalysts for the oxygen reduction reaction.

ABSTRACT: The conversion of coal into high-performance electrochemical energy materials, exemplified by electrodes and electrocatalysts for supercapacitors and fuel cells, is currently crucial to the advancement of high value-added, clean and non-fuel utilization of coal resources. In this work, anthracite-based nitrogen-doped porous carbon (ANPC) materials with well-defined pore architectures and adjustable nitrogen concentrations were prepared without any template: ANPC-1 by a one-step activation/doping process and ANPC-2 by a two-step process. The specific capacitance value of the ANPC-1 materials could attain a maximum of 346.0 F g^-1 at the current density of 0.5 A g^-1 in 6 M KOH. Supercapacitors composed of the ANPC-1 electrodes were able to achieve high energy densities u

SUBMITTER: Qi J 

PROVIDER: S-EPMC9069837 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature