Porous Carbon from Corn Flour Prepared by H3PO4 Carbonization Combined with KOH Activation for Supercapacitors - Journal of Power and Energy Engineering

JPEE > Vol.9 No.8, August 2021

Journal of Power and Energy Engineering

Volume 9, Issue 8 (August 2021)

ISSN Print: 2327-588X ISSN Online: 2327-5901

Google-based Impact Factor: 1.37 Citations

Porous Carbon from Corn Flour Prepared by H₃PO₄ Carbonization Combined with KOH Activation for Supercapacitors ()

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DOI: 10.4236/jpee.2021.98002 285 Downloads 1,072 Views Citations

Author(s)

Xinyang Li¹, Guojiang Wu^2*

Affiliation(s)

¹Hefei No.8 High School, Hefei, China.
²Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.

ABSTRACT

Hierarchical porous activated carbon is a superior material in manufacturing supercapacitors. However, the hierarchical porous structure is hard to obtain from a single activation method. This work was carried out with the anticipation of producing activated carbon by reactivating corn flour with KOH. By employing the electrodes, the supercapacitor demonstrated a high discharge capacitance (151.2 F·g^-1 at 1 A·g^-1), and the specific capacitance is with 3.7 times more capacitance than the activated carbon only through H₃PO₄ activation. The mechanism of improving the electrical performance has been discussed through performing SEM, XRD, EIS, and Raman analysis. The hierarchical porous and disordered structure emerge smaller charge transfer resistance, and fast electron transfer.

KEYWORDS

Activated Carbon, Hierarchical Porous, Reactivating Corn Flour, Supercapacitors

Share and Cite:

Li, X. and Wu, G. (2021) Porous Carbon from Corn Flour Prepared by H₃PO₄ Carbonization Combined with KOH Activation for Supercapacitors. Journal of Power and Energy Engineering, 9, 18-25. doi: 10.4236/jpee.2021.98002.

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