Morphological characterization of γ-LiAlO2-filled composite polymer electrolytes containing LiPF6

✍ Scribed by E. Morales; I. Villarreal; J. L. Acosta

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 276 KB
• Volume: 73
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19990808)73:6<1023::aid-app21>3.0.co;2-g

✦ Synopsis

Morphological properties of composite polymer electrolytes based on blends of polyethylene oxide (PEO) and a perfluorinated polyphosphazene (PPz) containing LiPF 6 as lithium salt and a finely divided ceramic filler, ␥-LiAlO 2 , were studied by using polarizing optical microscopy and differential scanning calorimetry (DSC). A parallel study was performed on propylene carbonate plasticized composite polymer electrolytes. Results indicate that both the morphology and the thermal properties depend upon the composition of the polymer host, a result not observed in composite polymer electrolytes having the same polymer composition containing LiCF 3 SO 3 as lithium salt. The incorporation of the ceramic filler at the lower concentration tested (10% by wt) has practically no effect on the thermal behavior of the samples; whereas, differences were clearly distinguished at a concentration of ceramic material of 20 wt %.