模板法制备的纳米木质素基分级多孔碳性能研究

Study on the properties of hierarchical lignin nanoparticles-based porous carbon using template method

文章以纳米木质素(LNP)为碳前驱体,借助模板法制备了LNP基分级多孔碳。相比于单模板法制备的LNP基分级多孔碳(SLC和FLC),纳米SiO_(2)耦合PluronicF127作为双模板剂制备的LNP基分级多孔碳(FSLC)呈现“蜂窝状”结构,并具有典型的介孔特征,介孔率高达87%。作为超级电容器的电极,FSLC展现出了很好的电化学性能,当电流密度为0.5 A/g时,其质量比电容为250 F/g,是SLC质量比电容(95 F/g)的163%。双模板法制备高性能分级多孔碳可为木质素在储能领域的应用提供新途径。

Lignin nanoparticles(LNP)as the carbon precursor is used to prepare hierarchical porous carbon using template methods in this study.In comparison to the porous carbons(SLC,FLC)prepared with a single template method,the LNP-based porous carbon(FSLC)is fabricated using nano-SiO_(2) coupled with PluronicF127 as double templates.This approach results in a honeycomb-like structure with typical mesoporous characteristics for FSLC,achieving a mesoporous ratio of up to 87%.As a supercapacitor electrode,FSLC demonstrates good electrochemical performance,with a mass specific capacitance of 250 F/g at a current density of0.5 A/g,representing a 163%increase over mass specific capacitance(95 F/g)of the SLC.The dual-template method for producing high-performance porous carbon offers a novel approach for utilizing lignin in energy storage application.