Spherical activated carbon (SPs) with hierarchical porous structure was prepared via a simple solvent evaporation method followed by an activation process using leonardite humic acid (LHA) as carbon source. The surface morphologies and pore parameters of the as-prepared SPs were analyzed by scanning electron microscope (SEM) and N2 physical adsorption-desorption instrument. The electrochemical performance of supercapacitors tested by galvanostatic charge-discharge (GCD), cyclic voltammograms (CV) and electrochemical impedance spectroscopy (EIS) are conducted in both aqueous and organic electrolyte. The SPs with high specific surface area (2034 m2 g-1) and pore volume (1.24 cm3 g-1) exhibit a superior higher specific capacitance of 319 F g-1 at a current density of 0.05 A g-1 in aqueous electrolyte compared with powdered activated carbon (SP1). In addition, SPs1 also exhibit a high initial specific capacitance of 154 F·g-1 at 0.05 A·g-1 and a higher capacitance retention of 96.4% than the bulked sample started from the same raw materials in organic electrolyte. These results suggest that the LHA-based spherical activated carbon should be a competitive and promising supercapacitor electrode material.
Published in | American Journal of Modern Energy (Volume 4, Issue 4) |
DOI | 10.11648/j.ajme.20180404.11 |
Page(s) | 26-32 |
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2019. Published by Science Publishing Group |
Humic Acid, Spherical Activated Carbon, Pore Structure, Supercapacitors
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APA Style
Yuzhu Ma, Cong Zhou, Baojun Yu, Mingming Chen, Chengyang Wang. (2019). Study on Preparation and Electrochemical Properties of Biomass-Derived Spherical Activated Carbon. American Journal of Modern Energy, 4(4), 26-32. https://doi.org/10.11648/j.ajme.20180404.11
ACS Style
Yuzhu Ma; Cong Zhou; Baojun Yu; Mingming Chen; Chengyang Wang. Study on Preparation and Electrochemical Properties of Biomass-Derived Spherical Activated Carbon. Am. J. Mod. Energy 2019, 4(4), 26-32. doi: 10.11648/j.ajme.20180404.11
@article{10.11648/j.ajme.20180404.11, author = {Yuzhu Ma and Cong Zhou and Baojun Yu and Mingming Chen and Chengyang Wang}, title = {Study on Preparation and Electrochemical Properties of Biomass-Derived Spherical Activated Carbon}, journal = {American Journal of Modern Energy}, volume = {4}, number = {4}, pages = {26-32}, doi = {10.11648/j.ajme.20180404.11}, url = {https://doi.org/10.11648/j.ajme.20180404.11}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajme.20180404.11}, abstract = {Spherical activated carbon (SPs) with hierarchical porous structure was prepared via a simple solvent evaporation method followed by an activation process using leonardite humic acid (LHA) as carbon source. The surface morphologies and pore parameters of the as-prepared SPs were analyzed by scanning electron microscope (SEM) and N2 physical adsorption-desorption instrument. The electrochemical performance of supercapacitors tested by galvanostatic charge-discharge (GCD), cyclic voltammograms (CV) and electrochemical impedance spectroscopy (EIS) are conducted in both aqueous and organic electrolyte. The SPs with high specific surface area (2034 m2 g-1) and pore volume (1.24 cm3 g-1) exhibit a superior higher specific capacitance of 319 F g-1 at a current density of 0.05 A g-1 in aqueous electrolyte compared with powdered activated carbon (SP1). In addition, SPs1 also exhibit a high initial specific capacitance of 154 F·g-1 at 0.05 A·g-1 and a higher capacitance retention of 96.4% than the bulked sample started from the same raw materials in organic electrolyte. These results suggest that the LHA-based spherical activated carbon should be a competitive and promising supercapacitor electrode material.}, year = {2019} }
TY - JOUR T1 - Study on Preparation and Electrochemical Properties of Biomass-Derived Spherical Activated Carbon AU - Yuzhu Ma AU - Cong Zhou AU - Baojun Yu AU - Mingming Chen AU - Chengyang Wang Y1 - 2019/01/03 PY - 2019 N1 - https://doi.org/10.11648/j.ajme.20180404.11 DO - 10.11648/j.ajme.20180404.11 T2 - American Journal of Modern Energy JF - American Journal of Modern Energy JO - American Journal of Modern Energy SP - 26 EP - 32 PB - Science Publishing Group SN - 2575-3797 UR - https://doi.org/10.11648/j.ajme.20180404.11 AB - Spherical activated carbon (SPs) with hierarchical porous structure was prepared via a simple solvent evaporation method followed by an activation process using leonardite humic acid (LHA) as carbon source. The surface morphologies and pore parameters of the as-prepared SPs were analyzed by scanning electron microscope (SEM) and N2 physical adsorption-desorption instrument. The electrochemical performance of supercapacitors tested by galvanostatic charge-discharge (GCD), cyclic voltammograms (CV) and electrochemical impedance spectroscopy (EIS) are conducted in both aqueous and organic electrolyte. The SPs with high specific surface area (2034 m2 g-1) and pore volume (1.24 cm3 g-1) exhibit a superior higher specific capacitance of 319 F g-1 at a current density of 0.05 A g-1 in aqueous electrolyte compared with powdered activated carbon (SP1). In addition, SPs1 also exhibit a high initial specific capacitance of 154 F·g-1 at 0.05 A·g-1 and a higher capacitance retention of 96.4% than the bulked sample started from the same raw materials in organic electrolyte. These results suggest that the LHA-based spherical activated carbon should be a competitive and promising supercapacitor electrode material. VL - 4 IS - 4 ER -