Synthesis of Activated Carbon from a Bio Waste (Flower of Shorea Robusta) Using Different Activating Agents and Its Application as Supercapacitor Electrode
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The activated carbon is a very good choice for using as supercapacitor electrode materials. Herein, the flower of Shorea robusta a bio-waste material was successfully used to synthesize the activated carbons for application as electrode materials of supercapacitor. The activated carbon was synthesized through chemical activation process followed by thermal treatment at 700oC in presence of N2 atmosphere using KOH, ZnCl2 and H3PO4 as the activating agents. The physicochemical analyses demonstrate that the obtained activated carbons are graphitic in nature and the degree of disorder of the graphitic carbons is changed with changing the activating agents. The activated carbon obtained from Shorea robusta flower (ACSF-K) electrode shows the specific capacitance of ~610 F g-1 at 2 A g-1 current density, which is higher than ACSF-Z (560 F g-1) and ACSF-H (470 F g-1) electrode material under the identical current density. The synthesized graphitic carbons also demonstrate good rate capability and high electrochemical stability as supercapacitor electrode.
Abstract
The activated carbon is a very good choice for using as supercapacitor electrode materials. Herein, the flower of Shorea robusta a bio-waste material was successfully used to synthesize the activated carbons for application as electrode materials of supercapacitor. The activated carbon was synthesized through chemical activation process followed by thermal treatment at 700oC in presence of N2 atmosphere using KOH, ZnCl2 and H3PO4 as the activating agents. The physicochemical analyses demonstrate that the obtained activated carbons are graphitic in nature and the degree of disorder of the graphitic carbons is changed with changing the activating agents. The activated carbon obtained from Shorea robusta flower (ACSF-K) electrode shows the specific capacitance of ~610 F g-1 at 2 A g-1 current density, which is higher than ACSF-Z (560 F g-1) and ACSF-H (470 F g-1) electrode material under the identical current density. The synthesized graphitic carbons also demonstrate good rate capability and high electrochemical stability as supercapacitor electrode.
참고문헌 (17)
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