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Effect of crystallinity and particle size on coke-based anode for lithium ion batteries

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(5), pp.911-920
  • DOI : 10.1007/s42823-020-00196-0
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : July 14, 2020
  • Accepted : October 12, 2020
  • Published : October 1, 2021

Lee Seung Eun 1 Kim Ji Hong 1 Lee, Young-Seak 2 Bai Byong Chol 3 Im Ji Sun 1

1한국화학연구원
2충남대학교
3한국융합섬유연구원

Accredited

ABSTRACT

This study examined the efects of micro- (crystallinity) and macro (orientation)-crystalline properties of graphite on the initial efciency, discharge capacity, and rate performance of anodic materials. Needle coke and regular coke were selected as raw materials and pulverized to 2–25 μm to determine the efects of crystalline properties on particle shape after pulverization. Needle coke with outstanding crystallinity had high initial efciency, and smaller particles with larger specifc surface areas saw increased irreversible capacity due to the formation of SEI layers. Because of cavities existing between crystals, the poorer the crystalline properties were, the greater the capacity of the lithium ions increased. As such, regular coke had a 30 mAh/g higher discharge capacity than that of needle coke. Rate performance was more afected by particle size than by crystalline structure, and was the highest at a particle distribution of 10–15 μm.

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 2023-07-13)

Total Citation Counts(KCI+WOS) (19) 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 2023-10-01)

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