首页|Mesoporous graphitic carbon electrodes derived from boat-fruited shells of Sterculia Foetida for symmetric supercapacitors for energy storage applications

Mesoporous graphitic carbon electrodes derived from boat-fruited shells of Sterculia Foetida for symmetric supercapacitors for energy storage applications

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In recent years, intensive research efforts have focused on translating biomass waste into value-added carbonmaterials broadcasted for their significant role in energy and environmental applications. For the first time, highperformancecarbonaceous materials for energy storage applications were developed from the multi-voidstructure of the boat-fruited shells of Sterculia Foetida (SF). In that view, synthesized mesoporous graphiticactivated carbon (g-AC) via the combination of carbonization at various elevating temperatures of 700, 800, and900 ℃, respectively, and alkali activation by KOH, with a high specific surface area of 1040.5 m~2 g~(-1) and amesopore volume of 0.295 cm~3 g~(-1). In a three-electrode configuration, the improved electrode (SF–K900)exhibited excellent electrochemical behavior, which was observed in an aqueous electrolyte (1 M H_2SO_4) with ahigh specific capacitance of 308.6 F/g at a current density of 1 A/g, owing to the interconnected mesoporestructures and high surface area of SF-K900. The symmetric supercapacitor (SSC) delivered the specific capacitanceof 138 F/g at 1 A/g with a high energy density (ED) of 13.4 Wh/kg at the power density (PD) of 24.12 kW/kg with remarkable cycle stability and supercapacitive retention of 93% over 5000 cycles. Based on the findings,it is possible to develop low-cost active electrode materials for high-rate performance SSC using mesoporous g-ACderived from SF boat-fruited shells.

BiowasteMesoporous structureGraphitic carbonSymmetric supercapacitorEnergy-storageSterculia foetida

G. Boopathi、R. Ragavan、S.M. Jaimohan、Suresh Sagadevan、Ikhyun Kim、A. Pandurangan、P. Sivaprakash

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Department of Chemistry, Anna University, Chennai, 600025, India

Advanced Materials Laboratory, Central Leather Research Institute, Chennai, 600020, India

Nanotechnology & Catalysis Research Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia

Department of Mechanical Engineering, Keimyung University, Daegu, 42601, Republic of Korea

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2024

10.1016/j.chemosphere.2023.140650

Chemosphere

Chemosphere

ISSN：0045-6535
年,卷(期)：2024.348(Jan.)