Biomass-derived Co@crystalline carbon@carbon aerogel composite with enhanced thermal stability and strong microwave absorption performance

A novel [email protected] [email protected] aerogel composite with yolk-shell structure was fabricated via a green and facile method using biomass-based alginate aerogels as precursor. In the resultant composite, a large amount of highly crystallized Co nanoparticles (∼41.5 wt%) with a diameter of 5–20 nm was coated with crystalline carbon layer and evenly embedded in the porous carbon aerogel matrix. Due to core-shell [email protected] carbon...