Abstract
Lignin-based activated carbon fibers (ACFs) were prepared by electrospinning of hardwood acetic acid lignin (HW-AAL) solution followed by thermostabilization, carbonization, and steam activation. The thermostabilization process was able to be remarkably shortened from 38 h to 3 h with hexamethylenetetramine (hexamine) in binary solvents, AcOH/CCl4 (8/2), when compared with conventional thermostabilization processes. The resultant ACFs possessed higher specific surface area (2185 m2 g-1) than those from commercial activated carbon and electrospun lignin fibers without hexamine. These ACFs also exhibited good electrical capacitance (133.3 F g-1 at a current density of 1 A g-1) as electrodes of electric double layer capacitor (EDLC) are efficient not only due to their large surfaces area but also due to their porous structure with well-developed micropores (diameter: 0.5–1.3 nm). High energy density and power density of this EDLC (42 Wh kg-1 and 91 kW kg-1, respectively) were also achieved.
Acknowledgments
This work was supported by a grant from the Ministry of Agriculture, Forestry and Fisheries of Japan, “Development of Technologies for Biofuel Production Systems in Rural Areas (2012–2015)”. We would also like to thank Prof. Aorigele (South China University of Technology, China) for his valuable advice to our work.
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©2015 by De Gruyter
Articles in the same Issue
- Frontmatter
- Original Articles
- Cloning and expression of a sesquiterpene synthase gene from Taiwania cryptomerioides
- Stabilization, degradation, and dissolution behavior of Scots pine polysaccharides during polysulfide (K-PS) and polysulfide anthraquinone (K-PSAQ) pulping
- Swelling, viscoelastic, and anatomical studies on ionic liquid-swollen Norway spruce as a screening tool toward ionosolv pulping
- Synthesis and antifungal activity of dehydroabietic acid-based thiadiazole-phosphonates
- Nanofibrillation of TEMPO-oxidized bleached hardwood kraft cellulose at high solids content
- Free radical gelling reactions of lignosulfonates
- Preparation of electrode for electric double layer capacitor from electrospun lignin fibers
- Standard and non-standard deformation behaviour of European beech and Norway spruce during compression
- Determination of log moisture content using ground penetrating radar (GPR). Part 1. Partial least squares (PLS) method
- Determination of log moisture content using ground penetrating radar (GPR). Part 2. Propagation velocity (PV) method
- Improved method based on dual-energy X-ray absorptiometry for nondestructive evaluation of solid wood moisture content
- A comparative study of dewatering of Pinus radiata sapwood using supercritical CO2 and conventional forced air-drying via in situ magnetic resonance microimaging (MRI)
- Influence of exposure time, wood species and dimension on the remaining copper and chromium content in CC-treated wood after field and laboratory leaching tests
Articles in the same Issue
- Frontmatter
- Original Articles
- Cloning and expression of a sesquiterpene synthase gene from Taiwania cryptomerioides
- Stabilization, degradation, and dissolution behavior of Scots pine polysaccharides during polysulfide (K-PS) and polysulfide anthraquinone (K-PSAQ) pulping
- Swelling, viscoelastic, and anatomical studies on ionic liquid-swollen Norway spruce as a screening tool toward ionosolv pulping
- Synthesis and antifungal activity of dehydroabietic acid-based thiadiazole-phosphonates
- Nanofibrillation of TEMPO-oxidized bleached hardwood kraft cellulose at high solids content
- Free radical gelling reactions of lignosulfonates
- Preparation of electrode for electric double layer capacitor from electrospun lignin fibers
- Standard and non-standard deformation behaviour of European beech and Norway spruce during compression
- Determination of log moisture content using ground penetrating radar (GPR). Part 1. Partial least squares (PLS) method
- Determination of log moisture content using ground penetrating radar (GPR). Part 2. Propagation velocity (PV) method
- Improved method based on dual-energy X-ray absorptiometry for nondestructive evaluation of solid wood moisture content
- A comparative study of dewatering of Pinus radiata sapwood using supercritical CO2 and conventional forced air-drying via in situ magnetic resonance microimaging (MRI)
- Influence of exposure time, wood species and dimension on the remaining copper and chromium content in CC-treated wood after field and laboratory leaching tests