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Preparation of Flax Residue Activated Carbon by KOH Method and Its Electrode Performance
School of Material Science and Engineering, Northeast Forestry University, Key Laboratory of Biomass Material Science and Technology of Ministry of Education of China, Harbin, China
School of Material Science and Engineering, Northeast Forestry University, Key Laboratory of Biomass Material Science and Technology of Ministry of Education of China, Harbin, China
School of Material Science and Engineering, Northeast Forestry University, Key Laboratory of Biomass Material Science and Technology of Ministry of Education of China, Harbin, China
- 1 School of Material Science and Engineering, Northeast Forestry University, Key Laboratory of Biomass Material Science and Technology of Ministry of Education of China, Harbin, China
- 2 School of Material Science and Engineering, Northeast Forestry University, Key Laboratory of Biomass Material Science and Technology of Ministry of Education of China, Harbin, China
- 3 School of Material Science and Engineering, Northeast Forestry University, Key Laboratory of Biomass Material Science and Technology of Ministry of Education of China, Harbin, China
Materials Sciences and Applications·Volume 12 (2021)·Pages 417–435·Published 24 September 2021·DOI10.4236/msa.2021.129028
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Abstract
In this study, activated carbon was prepared by the potassium hydroxide activation method with flax residues as raw materials. High-quality activated carbon was prepared by single factor and orthogonal experiments. Iodine adsorption and methylene blue adsorption were used as performance indicators. As prepared activated carbon was characterized by XRD, XPS and SEM. The results showed that the optimized electrode material was prepared under an impregnation ratio of 1:2, activation temperature of 800°C and activation time of 100 min. The yield of activated carbon was 49.48%, the iodine value was 1667.13 mg/g and the methylene blue value was 429 mg/g. The specific surface area measured by the automatic porosity analyzer is 1221 m 2 /g, and the mass-specific capacitance is 215.7 F/g under current density of 0.1 A/g.
KeywordsFlax ResidueActivated CarbonActivationElectrochemical PerformanceElectrode Material
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