Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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The Effect of Particle Size Distribution of the Nongraphitic Carbon on the Performance of Negative Carbon Electrode in Lithium Ion Secondary Battery

무정형 탄소의 입도분포에 따른 리튬이온이차전지의 탄소부극 특성

  • Kim, Hyun-Joong (Department of Chemical Engineering, College of Engineering, Dankook University) ;
  • Lee, Chul-Tae (Department of Chemical Engineering, College of Engineering, Dankook University)
  • 김현중 (단국대학교 공과대학 화학공학과) ;
  • 이철태 (단국대학교 공과대학 화학공학과)
  • Received : 1998.07.20
  • Accepted : 1998.08.27
  • Published : 1998.10.10
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Abstract

Material and electrochemical characteristics of petroleum coke of the nongraphitic carbon prepated with attrition milling for 6~48 hours and heat-treatment at $700^{\circ}C$ for 1 hour was investigated. The milling condition affects the particle size distribution, BET specific surface area and interlayer distance of petroleum cokes. Carbon electrode with petroleum cokes prepared at the milling time of 12~24 hours and having average particle size of $6{\sim}8{\mu}m$ showed best electrochemical characteristics form the investigation of cyclic voltammogram and charge-discharge characteristics.

무정형탄소인 petroleum cokes를 대상으로 attrition mill을 이용하여 6~48시간 동안 분쇄한 후 이를 $700^{\circ}C$에서 1시간 동안 열처리한 후 재료특성과 전기화학적 특성을 조사하였다. 분쇄에 의한 효과에 의하여 입도분포와 BET 비표면적의 변화가 발생하였으며 내부의 층간거리도 변화시킬 수 있었다. 이들의 재료특성 변화에 의한 cyclic voltammogram과 충 방전 특성과의 관계를 조사한 결과, 분쇄시간 12~24시간에서 분쇄된 후의 경우가 $6{\sim}8{\mu}m$의 평균입도를 가지며 비교적 큰 층간거리와 표면적을 가질 때 전기화학적 특성이 비교적 우수하였다.

Keywords

Acknowledgement

Supported by : 단국대학교

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