Composite Polymer Electrolytes Based on (PEO)4CF3COOLi and Multi-Walled Carbon Nanotube (MWCNT)

The addition of nanoparticles as fillers has a significant influence in modifying the dynamic conditions and avoiding crystallization in polymer composites. In this work, (PEO)(4)CF3COOLi electrolyte and multi-walled carbon nanotubes (MWCNTs) were used to prepare composites by a solution method. The formation of the new composite was evidenced by the experimental results obtained from DSC analysis and infrared spectroscopy (FTIR). The impedance spectroscopy analysis shows a notable decrease in the resistance, which is attributed to an interaction between the oxygen of the polymer and the Li+ cations of the salt, and the interactions between the electrolyte and the MWNTs. Values of dc conductivity of 8.42 x 10(-4) S cm(-1) at room temperature are obtained at a concentration of 2.0 wt.% MWCNT in the whole electrolyte. The results indicate that membranes can be used in technological devices such as batteries and gas or moisture sensors.

Automated summary

The addition of nanoparticles as fillers can effectively modify the dynamic conditions and prevent crystallization in polymer composites. In this study, composites were prepared using (PEO)(4)CF3COOLi electrolyte and multi-walled carbon nanotubes (MWCNTs) through a solution method. Experimental results from DSC analysis and infrared spectroscopy confirmed the formation of the new composite. Impedance spectroscopy analysis showed a significant decrease in resistance, attributed to interactions between the polymer's oxygen, salt's Li+ cations, and the electrolyte with the MWNTs. At a concentration of 2.0 wt.% MWCNT, a dc conductivity value of 8.42 x 10(-4) S cm(-1) was achieved at room temperature. The results suggest that these membranes can be utilized in technological devices such as batteries and gas or moisture sensors.