Article
  • A Study on the Improvement of the Thermal Stability of PE Separator for Lithium Secondary Battery Application Using Poly(meta-phenylene isophthalamide)
  • Park M, Ra BH, Bae JY, Kim BH, Choi WK
  • Poly(meta-phenylene isophthalamide)를 이용한 리튬이차전지용 PE 분리막의 고내열화 연구
  • 박민아, 라병호, 배진영, 김병현, 최원근
Abstract
In this study, we prepared separators with improved thermal stability by coating microporous polyethylene (PE) film for lithium secondary battery using poly(meta-phenylene isophthalamide) (Nomex). The mechanical and thermal properties of prepared separators were evaluated by thermal stability test and TMA as a function of the Nomex concentration and coating parameters. The corresponding coated PE separator showed better thermal and mechanical properties than the original PE separator. Electrochemical properties were also assessed by ionic conductivity, cyclic voltammetry and charge/discharge cycle.

본 연구에서는 기존의 이차전지용 폴리에틸렌(PE) 분리막에 poly(meta-phenylene isophthalamide) (Nomex)를 코팅함으로써 뛰어난 내열성을 가진 coated PE 분리막을 제조하였다. 다양한 Nomex 용액 조성과 PE 분리막 코팅조건에 따라 제조한 분리막의 기계적 및 열적 특성을 열 노출 테스트와 TMA를 이용하여 측정하였고 제조된 코팅분리막은 기존의 PE 분리막보다 향상된 열 수축률 및 기계적 성질을 보였다. 코팅 분리막의 전기화학적 성질은 이온전도도, 순환 전위-전류법, 충방전 사이클 테스트 등을 이용해 측정하였다.

Keywords: lithium secondary battery; polyethylene separator; electrolyte; dip coating; Nomex.

References
  • 1. Ozawa K, Solid State Ion., 69(3-4), 212 (1994)
  •  
  • 2. Laman FC, Gee MA, Denovan J, J. Electrochem. Soc., 140, L51 (1993)
  •  
  • 3. Arora P, Zhang ZM, Chem. Rev., 104(10), 4419 (2004)
  •  
  • 4. Jundquist J, Landsager C, Palmer N, Troffkin H, US Patent 4650730 (1988)
  •  
  • 5. Jundquist J, Landsager C, Palmer N, Troffkin H, US Patent 4731304 (1988)
  •  
  • 6. Fisher HM, Wensley CG, US Patent 6368742 (2002)
  •  
  • 7. Cho TH, Tanaka M, Onishi H, Kondo Y, Nakamura T, Yamazaki H, Tanase S, Sakai T, J. Power Sources, 181(1), 155 (2008)
  •  
  • 8. Sohn JY, Lim JS, Gwon SJ, Shin JH, Choi JH, Nho YC, Polym.(Korea), 32(6), 598 (2008)
  •  
  • 9. Im JS, Sohn JY, Shin J, Lim YM, Choi JH, Kim JS, Nho YC, Polym.(Korea), 34(1), 74 (2010)
  •  
  • 10. Charya AB, Prog. Polym. Sci., 25, 371 (2000)
  •  
  • 11. Chung YS, Yoo SH, Kim CK, Ind. Eng. Chem. Res., 9, 4346 (2009)
  •  
  • 12. Jeong HS, Kim KC, Lee SY, J. Korean. Electrochem.Soc., 12, 324 (2009)
  •  
  • 13. Jeong HS, Noh JH, Hwang CG, Hwang CG, Kim SH, Lee SY, Macromol. Chem. Phys., 211, 420 (2010)
  •  
  • 14. Chung YS, Yoo SH, Kim CK, Ind. Eng. Chem. Res., 48(9), 4346 (2009)
  •  
  • 15. Kim M, Shon JY, Nho YC, Lee TW, Park JH, J. Electrochem. Soc., 157(1), A31 (2010)
  •  
  • 16. Nishikawa S, US Patent 0165450 (2011)
  •  
  • 17. Nishikawa S, US Patent 0143185A1 (2011)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2013; 37(1): 22-27

    Published online Jan 25, 2013

  • Received on Jun 8, 2012
  • Accepted on Sep 13, 2012