Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Structural Characterization and EDLC-Electrode Performance of Coal-Tar-Pitch Activated Carbon Using K2CO3 Treatment

K2CO3 처리된 Coal Tar Pitch 활성탄 전극의 결정성 및 EDLC 성능

  • Choi, Poo Reum (Department of Chemical Engineering, Myongji University) ;
  • Jung, Ji Chul (Department of Chemical Engineering, Myongji University) ;
  • Lim, Yun-Soo (Department of Materials Science and Engineering, Myongji University) ;
  • Kim, Myung-Soo (Department of Chemical Engineering, Myongji University)
  • Received : 2016.06.27
  • Accepted : 2016.07.26
  • Published : 2016.09.27
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Abstract

Activated carbons (ACs) have been used as EDLC (electric double-layer capacitor) electrode materials due to their high specific area, stability, and ecological advantages. In order to prepare ACs with high density and crystallinity, coal tar pitch (CTP) was activated by $K_2CO_3$ and the textural and electrochemical properties of the obtained ACs were investigated. Although the CTP ACs formed by $K_2CO_3$ activation had much smaller specific surface area and pore volume than did the CTP ACs formed by KOH activation, their volumetric specific capacitance (F/cc) levels as electrode materials for EDLC were comparable due to their higher density and micro-crystallinity. Structural characterization and EDLC-electrode performance were studied with different activation conditions of $CTP/K_2CO_3$ ratio, activation temperature, and activation period.

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References

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