Diatomite waste derived N-doped porous carbon for applications in the oxygen reduction reaction and supercapacitors.

ABSTRACT: Biomass waste recycling and utilization is of great significance for improving ecological environments and relieving the current energy crisis. Waste diatomite with an adsorbed mass of yeast protein resulting from beer filtration is feasibly converted into N-doped porous carbon (NPC) via high temperature thermal treatment. The resulting NPC inherits the three-dimensional hierarchical structure of the diatomite, with a unique rich-pore feature composed of micro/meso/macropores, which is beneficial for high exposure of the electrocatalytic sites and ion transfer and diffusion. The NPC compounds with controllable nitrogen doping are used for the oxygen reduction reaction (ORR) and in a supercapacitor. NPC-2 exhibits a half-wave potential of 0.801 V comparable to that (0.812 V) of comme

SUBMITTER: Huang Y 

PROVIDER: S-EPMC9419853 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature