biostudies-literatureUnknown13(10)Liu FHierarchical hollow tubular porous carbons have been widely used in applications of supercapacitors, batteries, CO₂ capture and catalysis due to their hollow tubular morphology, large aspect ratio, abundant pore structure and superior conductivity. Herein, hierarchical hollow tubular fibrous brucite-templated carbons (AHTFBC_s) were prepared using natural mineral fiber brucite as the template and KOH as the chemical activator. The effects of different KOH additions on the pore structure and capacitive performance of AHTFBC_s were systematically studied. The specific surface area and micropore content of AHTFBC_s after KOH activation were higher than those of HTFBC. The specific surface area of the HTFBC is 400 m² g^-1, while theRSC advances6606-6618https://www.ebi.ac.uk/biostudies/studies/S-EPMC9951771biostudies-literatureHierarchical hollow tubular fibrous brucite-templated carbons obtained by KOH activation for supercapacitors.PMC9951771Chuan XLiu FZhao YfalseHierarchical hollow tubular fibrous brucite-templated carbons obtained by KOH activation for supercapacitors.Hierarchical hollow tubular porous carbons have been widely used in applications of supercapacitors, batteries, CO₂ capture and catalysis due to their hollow tubular morphology, large aspect ratio, abundant pore structure and superior conductivity. Herein, hierarchical hollow tubular fibrous brucite-templated carbons (AHTFBC_s) were prepared using natural mineral fiber brucite as the template and KOH as the chemical activator. The effects of different KOH additions on the pore structure and capacitive performance of AHTFBC_s were systematically studied. The specific surface area and micropore content of AHTFBC_s after KOH activation were higher than those of HTFBC. The specific surface area of the HTFBC is 400 m² g^-1, while the2023-01-01T00:00:00Z2023 Feb2025-04-05T13:21:44.86Z2025-04-05T13:21:44.86ZS-EPMC99517713684558610.1039/d2ra07454k