Coal slime waste: a promising precursor to develop highly porous activated carbon for supercapacitors

Li Jiajia; Hu Jiajun; Wang Kai; Xia Hongyan

doi:10.1007/s42823-020-00138-w

Coal slime waste: a promising precursor to develop highly porous activated carbon for supercapacitors

Carbon Letters
Abbr : Carbon Lett.
2020, 30(6), pp.657-665
DOI : 10.1007/s42823-020-00138-w
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General
Received : December 13, 2019
Accepted : April 2, 2020
Published : December 1, 2020

Li Jiajia ¹, Hu Jiajun ¹, Wang Kai ¹, Xia Hongyan ¹

¹Xi’an Jiaotong University

Accredited

ABSTRACT

Efective processing and use of coal slime is of great signifcance to protect the environment and save resources. Diferent coal slimes (untreated with 43 wt% ash content, crushed and fotation treated with 10 wt% ash content, and pre-carbonized) were activated with KOH to prepare porous activated carbon. The results show the activated carbon prepared from coal slime with 10 wt% ash had high specifc surface area (3037 m2 /g) and pore volume (1.66 cm3 /g), which was ascribed to the suitable contents of minerals as template and oxygen-containing functional groups. Electrochemical measurements exhibited the best specifc capacitance of 220 F/g at 0.1 A/g and the cycle stability of over 100% capacitance retention after 1000 cycles at 5 A/g in 6 M KOH solution. Due to the high specifc surface area, superior electrochemical performance, and facile and low cost, developing highly porous activated carbon for supercapacitors is one alternative way for efective use of coal slime waste.

KEYWORDS

Coal slime · Activated carbon · Supercapacitor · Electrochemical performance

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Coal slime waste: a promising precursor to develop highly porous activated carbon for supercapacitors

ABSTRACT

KEYWORDS

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 2024-07-28)

Total Citation Counts(KCI+WOS) (14) 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 (16) 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 2024-10-01)

* References for papers published after 2023 are currently being built.

Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Coal slime waste: a promising precursor to develop highly porous activated carbon for supercapacitors

ABSTRACT

KEYWORDS

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WoS Citation Counts (13) 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 2024-07-28)

Total Citation Counts(KCI+WOS) (14) 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 (16) 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 2024-10-01)

REFERENCES (37) * References for papers published after 2023 are currently being built.

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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 2024-07-28)

* References for papers published after 2023 are currently being built.