Surface-driven charge storage behaviors of Kenaf-derived carbon electrodes with hierarchical porous structure for lithium-ion capacitors
- Surface-driven charge storage behaviors of Kenaf-derived carbon electrodes with hierarchical porous structure for lithium-ion capacitors
- 조세연; 이민의; 유지선; 진형준; 정용석
- Issue Date
- Applied surface science
- VOL 544, 148979
- On this work, we prepared the porous activated carbon as cathode of lithium-ion capacitor through two-step fabrication process using kenaf as biomass carbon precursor possible easily scaled-up for industrial production. The biomass-derived porous carbon shows an extremely high specific surface area of 2,719 m2 g？1 and relatively applicable pore volume of 1.6 m3 g？1 as well as well-developed carbon structure. As a result, it exhibits excellent lithium-ion capacitive performances with specific capacity of ~195 mA h g？1 at a current rate of 0.1 A g？1, good rate capability at current rates ranging from 0.1 to 4 A g？1, and outstanding cycling stability in organic electrolyte. These results suggest that the optimization of pore and carbon microstructure of biomass-derived carbon is contributed to outstanding electrochemical performance for improving the energy density of lithium-ion capacitor.
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