Construction of hierarchical porous carbon based on vacuum drying process of lignin hydrogel for supercapacitors

Probing the evolution in catalytic graphitization of biomass-based materials for enduring energetic applications

“…In a related study, hierarchically porous carbon derived from lignin and subsequently graphitized at 800 °C demonstrated advantageous electrolyte diffusion properties alongside desirable electrochemical characteristics, further accentuating the potential of lignin-derived materials for supercapacitors. 80 The cyclic voltammetry curves (Fig. 10e) exhibited a nearly rectangular shape across various voltage windows, indicative of the anticipated double-layer capacitance behavior.…”

Regulating the Mesoporous Structure of Carbon Nanospheres by a Local Ablation Method for High-Performance PEMFC Catalysts

“…However, due to the large size of the pore-forming substrate used in the template method, the large size of the obtained porous carbon is not conducive to O 2 and proton transport. In addition, the activation method is another main choice for the preparation of carbon materials with special porous structures and high specific surface areas. , Srinivasakannan et al . prepared porous carbon with a specific surface area of 980 m 2 /g at 1063 °C using date palm kernel as a precursor and CO 2 as an activator, but the micropore volume accounted for 93% of the total pore volume.…”

“…In addition, the activation method is another main choice for the preparation of carbon materials with special porous structures and high specific surface areas. 33,34 Srinivasakannan et al 35 prepared porous carbon with a specific surface area of 980 m 2 /g at 1063 °C using date palm kernel as a precursor and CO 2 as an activator, but the micropore volume accounted for 93% of the total pore volume. The porous carbon prepared by the traditional activation method is mainly composed of <2 nm micropores, which cannot meet the 4−7 nm mesopores urgently needed by the PEMFC carbon support.…”