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Characteristics of Lithium Secondary Batteries Using Li Salt-Organic Electrolyte as Function of Temperature

온도에 따른 리튬염 유기전해액 리튬이차전지의 특성

  • Doh, Chil-Hoon (Battery Research Group, Korea Electrotechnology Research Institute) ;
  • Shim, Eun-Gi (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) ;
  • Yeom, Dale (R&D Center, Ildong Chem, Co., Ltd.,) ;
  • Roh, Jae-Ho (R&D Center, Ildong Chem, Co., Ltd.,) ;
  • Hwang, Young-Gi (Department of Chemical Engineering, Kyungnam University)
  • 도칠훈 (한국전기연구원 전지연구그룹) ;
  • 심은기 (한국전기연구원 전지연구그룹) ;
  • 문성인 (한국전기연구원 전지연구그룹) ;
  • 윤문수 (한국전기연구원 전지연구그룹) ;
  • 염대일 (일동화학㈜ 기술연구소) ;
  • 노재호 (일동화학㈜ 기술연구소) ;
  • 황영기 (경남대학교 화학공학과)
  • Published : 2002.08.01

Abstract

This study investigated characteristics of ICR18650 batteries with different electrolyte compositions in the range of $80^{\circ}C\~-30^{\circ}C$. ICR18650 cells using $1M\;LiPF_6,\;EC:\;DEC:\;DMC(3:5:5)\;and\; 1M\;LiPF_6,\;EC:\;DEC:\;DMC:\;EMC(3:5:4:1)$ electrolyte systems, which DMC and EMC solvent were added in $1M\;LiPF_6,\;EC:\;DEC$ electrolytes have high specific energy in the wide range of temperature. The specific energy of ICR18650 batteries using $1M\;LiPF_6,\;EC:\;DEC:\;DMC(3:5:5)\;and\; 1M\;LiPF_6,\;EC:\;DEC;\:\;DMC:\;EMC(3:5:4:1)$ electrolyte at $-30^{\circ}C\;was\;64\%\;and\;59\%$ of room temperature$(25^{\circ}C)$, respectively.

본 연구는 전해액 조성별로 ICR18650전지를 제조하여 $80^{\circ}C$에서 $-30^{\circ}C$까지 온도에서 전지특성을 비교하였다. 1M $LiPF_6,\;EC: DEC$ 전해액에 유전율이 높은 DMC 및 EMC 용매를 첨가한 1M $LiPF_6,\;EC: DEC: DMC(3:5:5)$ 및 1M $LiPF_6,\;EC:\;DEC:\;DMC:\;EMC(3:5:4:1)$ 전해액을 사용한 ICR18650 전지는 고온이나 저온에서 높은 비에너지를 나타내었다. $1M LiPF_6,\;EC:\;DEC:\;DMC(3:5:5)$$1M LiPF6,\;EC:\;DEC:\;EMC(3:5:4:1)$전해액을 사용한 리튬이온전지의 비에너지는 상온$(25^{\circ}C)$에 대한 $-30^{\circ}C$의 비율로서 각각 $64\%$$59\%$를 나타내었다.

Keywords

References

  1. Lithium Batteries-New Materials, Developments and Perspectives v.1 G. Pistoia(ed.)
  2. J. Electrochem. Soc. v.147 C. K. Huang;J. S. Sakamoto;J. Wolfenstine;S. Surampudi https://doi.org/10.1149/1.1393622
  3. Principles and Applications of Electrochemistry(2nd Ed.) D. R. Crow
  4. J. Power Sources v.87 S. V. Sazhin;M. Y. Khimchenko;Y. N. Tritenivhenko;H. S. Lim https://doi.org/10.1016/S0378-7753(99)00434-6
  5. J. Electrochem. Soc. M. C. Smart;B. V. Ratnakumar;S. Surampudi
  6. J. Power Sources v.88 E. J. Plichta;W. K. Behll https://doi.org/10.1016/S0378-7753(00)00367-0
  7. J. Electrochem. Soc. v.145 Y. Ein-Eli;S. F. McDevitt;R. Laura https://doi.org/10.1149/1.1838196
  8. J. Korean Electrochem. Soc. v.3 C. H. Doh;S. I. Moon;M. S. Yun
  9. 12th International Seminar on Primary and Secondary Batteries and Applications Power-Energy Curves Revisited D. V. Ragone;B. M. Barnet;J. M. Bentley
  10. Lithium Secondary Batteries M. Yoshio;A. Kojawa