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Improved specific capacitance of pitch-based activated carbon by KOH/KMnO4 agent for supercapacitors

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2020, 30(5), pp.585-591
  • DOI : 10.1007/s42823-020-00158-6
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : April 10, 2020
  • Accepted : June 17, 2020
  • Published : October 1, 2020

Kim Sangjin 1 Bai Byong Chol 2 Kim Min Il 3 Lee, Young-Seak 4

1구미정보전자기술원
2한국생산기술연구원
3한국화학연구원
4충남대학교

Accredited

ABSTRACT

The pitch-based activated carbons were prepared with KOH/KMnO4 as a multiple function activation agent to increase the specifc capacitance of a supercapacitor electrode active material. And the porous structure and electrochemical properties of activated carbon were analyzed on varying amounts of KMnO4. KMnO4 was decomposed into K2O, MnO, and O2 at the activation temperature of KOH, and MnO was introduced to activated carbon. K2O/O2 reacts with a surrounding pitch to generate micropores and forms a pathway that exposes MnO to the outside. It also afects to the specifc surface area of activated carbon like KOH chemical activation. The enhanced specifc surface area and introduced MnO in activated carbon led to a 28.9% increase in specifc capacitance.

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-07-14)

Total Citation Counts(KCI+WOS) (15) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (15) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2023-10-01)

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