Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Development of Silicone coated by Carbon driven PVDF and its anode characteristics for Lithium Battery

전구체로서 PVDF를 이용한 탄소 도포 실리콘 재료의 개발 및 리튬이차전지 음극 특성

  • Doh, Chil-Hoon (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Jeong, Ki-Young (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Jin, Bong-Soo (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Kim, Hyun-Soo (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Moon, Seong-In (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Yun, Mun-Soo (Battery Research Group, Korea Electrotechnology Research Institute)
  • 도칠훈 (한국전기연구원 전지연구그룹) ;
  • 정기영 (한국전기연구원 전지연구그룹) ;
  • 진봉수 (한국전기연구원 전지연구그룹) ;
  • 김현수 (한국전기연구원 전지연구그룹) ;
  • 문성인 (한국전기연구원 전지연구그룹) ;
  • 윤문수 (한국전기연구원 전지연구그룹)
  • Published : 2005.11.10
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Abstract

The electrochemical behavior of Si-C material synthesized by heating the mixture of silicon and polyvinylidene fluoride (PVDF). Coin cells of the type 2025 were made using the synthesized material and the electrochemical studies were performed. Si-C/Li cells were made by using the developed Si-C material. Charge/discharge test was performed at 0.1C hour rate. Initial charge and discharge capacities at Si-C material derived from 20 wt.% of PVDF was found to be 1,830 and 526 mAh/g respectively. Initial charge/discharge characteristics of the electrode were analyzed. The level of reversible specific capacity was about 216 mAh/g at Si-C material derived from 20 wt.% of PVDF, IIE, intercalation efficiency at initial charge/discharge, was 68 %. Surface irreversible specific capacity was 31 mAh/g, and average specific resistance was 2.6 ohm*g.

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