Highly Porous Carbon Sorbents Prepared from Bean Dregs for Electric Double-Layer Supercapacitor

  • Heung-Joe Jung
  • Kyung-Hee Park
  • Chan Kim
  • Tae-Young Kim
  • Jae-Wook Lee
Regular Paper


Environment-friendly and cost-effective carbons were prepared for application in high-performance supercapacitors using bean dregs via carbonization and activation. The prepared samples were characterized using scanning electron microscopy and Brunauer–Emmett–Teller analysis. Furthermore, the electrochemical properties and capacitive behavior of the electrodes were systematically studied using cyclic voltammetry and AC impedance analysis. The porous carbon activated at 900 °C for 60 min had the largest specific surface area (3700 m2 g−1) and the highest capacitance (260 F g−1) at a scan rate of 1 mV s−1.


Bean dregs Porous carbon Activation Electric double-layer supercapacitor 



This study was supported by the research funds from Chosun University, 2015.


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Copyright information

© The Korean Institute of Electrical and Electronic Material Engineers 2018

Authors and Affiliations

  • Heung-Joe Jung
    • 1
  • Kyung-Hee Park
    • 2
  • Chan Kim
    • 3
  • Tae-Young Kim
    • 4
  • Jae-Wook Lee
    • 5
  1. 1.Department of BiotechnologyShingyeong UniversityHwaseongKorea
  2. 2.Department of Dental Materials and Medical Research Center for Biomineralization Disorders, School of DentistryChonnam National UniversityGwangjuKorea
  3. 3.New Materials Research CenterAmogreentech CO., LTDGimpoKorea
  4. 4.Department of Environmental EngineeringChonnam National UniversityGwangjuKorea
  5. 5.Department of Chemical and Biochemical EngineeringChosun UniversityGwangjuKorea

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