Articles
  • Electrochemical and morphological properties of separator induced by different stretching ratio
  • Yong Nam Joa, T. Subburaja, Hyun Il Kimb, Bong Soo Jinc and Chang Woo Leea,*
  • a Department of Chemical Engineering and Green Energy Center, College of Engineering, Kyung Hee University, 1 Seochun, Gihung, Yongin, Gyeonggi 446-701, Korea b CS Tech Co., Ltd, 1720-46 Taejang 2, Wonju, Gangwon, Korea c Korea Electrotechnology Research Institute, 28-1 Seongju, Changwon 641-120, Korea
Abstract
The polyethylene (PE) based separator for lithium-ion rechargeable batteries has been investigated and compared with conventional triple layer (PP/PE/PP) Celgard 2340 separator using layered Li[Ni1/3Co1/3Mn1/3]O2 as a cathode material. The morphology, contact angle and electrochemical behavior of the 180% and 300% stretched PE separators were evaluated. The electrochemical result revealed that the initial discharge capacity of PE 180% and 300% stretched separator had 146.28 mAh/g and 133.43 mAh/g at C/5 rates, respectively. On the other hand, 300% stretched separator possesses better capacity retention ratio than the others and therefore demonstrated a good cycleability with less capacity fading than that of 180% stretched separator and conventional Celgard 2340 separator.

Keywords: Lithium-ion batteries, Separator, Microporous, Cathode material, Specific capacity

This Article

  • 2012; 13(S2): 312-314

    Published on Nov 30, 2012