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Chlorella‑derived activated carbon with hierarchical pore structure for energy storage materials and adsorbents

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2019, 29(2), pp.167-175
  • DOI : 10.1007/s42823-019-00018-y
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : March 20, 2018
  • Accepted : April 8, 2019
  • Published : April 1, 2019

Han Joah 1 Kyubock Lee ORD ID 2 Min Sung Choi 3 PARK, HOSEOK 3 Woong Kim 4 roh kwang chul 1

1한국세라믹기술원
2충남대학교
3성균관대학교
4고려대학교

Accredited

ABSTRACT

Chlorella-derived activated carbon (CDAC) with a high specific surface area and hierarchical pore structure was prepared as a CO2 adsorbent and as a supercapacitor electrode material. During KOH activation of Chlorella-derived carbon, metallic K gas penetrated from the outer walls to the inner cells, and pores formed on the outer frame and the inner surface. Micropores were dominant in CDAC, contributing toward a high specific surface area (> 3500 m2/g) and a hierarchical pore structure owing to the cell walls. Consequently, CDAC exhibited a high CO2 adsorption capacity (13.41 mmol/g at 10 atm and room temperature) and afforded high specific capacitance (142 F/g) and rate capability (retention ratio: 91.5%) in supercapacitors. Compared with woody- and herbaceous-biomass-derived activated carbons, CDAC has a superior specific surface area when the precursors are used without any pretreatment under the same conditions due to their soft components such as lipids and proteins. Furthermore, developing microalgae into high-value-added products is beneficial from both economic and environmental perspectives.

Citation status

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Total Citation Counts(KCI+WOS) (25) 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 (25) 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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