Electrochemical Performance of PEO10LiX-Li2TiO3 Composite Polymer Electrolytes

Introduction Recently, polymer electrolytes have attracted much attention for their potential use in replacing flammable organic solvent electrolytes currently used in lith-ium-ion batteries, thus improving the safety of re-chargeable lithium batteries. Moreover, the batteries with PE can be made in any shape, which make fully use of the space of electronic devices. PEO is a linear polymer with helix structure, and its structure makes it have much higher dissolution ability for salt even tho…

Electrochemical Performance of PEO_(10)LiX-Li_2TiO_3 Composite Polymer Electrolytes

The conductivities of polyethylene oxide (PEO)‐based polymer electrolytes (PE) can be improved by the addition of inorganic inert powder. The composite polymer electrolytes (CPE) PEO₁₀LiX (X = ClO^?₄ or N(CF₃SO₂ )₂ )‐Li₂TiO₃ were prepared by solution casting with inorganic solid electrolyte Li₂liO₃ powder as a filler. Results showed that the conductivities of PEO₁₀LiClO₄‐_‐3wt% Li₂TiO₃ and PEO₁₀LiN(CF₃SO₂)₂‐10wt% Li₂TiO₃ at 30 °C were 8.6×10^?‐⁶ and 5.6×10^?‐⁵ S·cm^?l, respectively. The conductivities of CPE increased with the decrease of filler's particle size. The ionic conduction mechanism analysis showed that there may be thee conduction routes in the CPE. i.e., PEO bulk, polymer‐filler interface and Li₂TiO₃ crystal.