화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.31, 323-329, November, 2015
DOI10.1016/j.jiec.2015.07.005  Export Citation
Nanocomposite solid polymer electrolytes based on poly(ethylene oxide)/POSS-PEG (n = 13.3) hybrid nanoparticles for lithium ion batteries
Anji Reddy Polu, and Hee-Woo Rhee†
  • Polymer Materials Lab, Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 121-742, South Korea
E-mail:
We successfully prepared the nanocomposite solid polymer electrolytes based on poly(ethylene oxide) (PEO)/polyhedral oligomeric silsesquioxane-polyethylene glycol (POSS-PEG) complexed with LiN(-SO2CF3)2 (LiTFSI) salt and studied the effect of POSS-PEG (n = 13.3) hybrid nanoparticles on structural, thermal, mechanical and ionic conductivity properties. The crystallinity of the nanocomposite solid polymer electrolytes has been characterized by X-ray diffraction (XRD). FTIR studies showed the evidence of the complexation between PEO, LiTFSI and POSS-PEG. Differential scanning calorimetry (DSC) was used to study their glass transition and melting behaviors and to measure their respective degrees of crystallinity. The degree of crystallinity reduced with POSS-PEG content, indicating restricted segmental motion of the polymer chains. The Young’s modulus increased from 0.076 to 0.19 MPa with the addition of POSS-PEG. Ionic conductivity studies reveal that solid polymer electrolyte with 30 wt% of POSS-PEG has the highest ionic conductivity of 5.05 × 10 -5 S/cm at room temperature (23 8C). The temperature dependence conductivity studies showed that the samples seemed to obey the Arrhenius behavior.
Keywords:POSS-PEG (n = 13.3);Nanocomposite solid polymer electrolyte;Differential scanning calorimetry;Crystallinity;Ionic conductivity
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