Plasticized Polymer Electrolyte Membranes Based on PEO/PVdF-HFP for Use as an Effective Electrolyte in Lithium-ion Batteries

• Published in: Chinese journal of polymer science Vol. 35; no. 3; pp. 407 - 421
• Main Authors: Prabakaran, Pradeepa, Manimuthu, Ramesh Prabhu, Gurusamy, Sowmya, Sebasthiyan, Edwinraj
• Format: Journal Article
• Language: English
• Published: Beijing Chinese Chemical Society and Institute of Chemistry, CAS 01.03.2017; Springer Nature B.V
• Subjects: Atomic; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; conductivity; Dielectrics; Differential thermal analysis; diffraction; Electrochemical analysis; Electrolytes; Ethylene; Ethylene oxide; Fading; force; Impedance; Industrial Chemistry/Chemical Engineering; Ion currents; Ionic; Lithium perchlorates; Lithium-ion batteries; microscopy; Performance evaluation; Plasticizers; Polyethylene oxide; Polymer Sciences; Polymers; Propylene; Rechargeable batteries; spectroscopy; Thermal properties; Vinylidene; Vinylidene fluoride; X-ray; X-ray diffraction; Atomic force microscopy; Impedance spectroscopy; Dielectrics; Ionic conductivity
• ISSN: 0256-7679; 1439-6203
• DOI: 10.1007/s10118-017-1906-9

Plasticized polymer electrolytes were prepared using poly（ethylene oxide） （PEO）/poly（vinylidene fluoride-hexafluoro propylene） （PVdF-HFP） with lithium perchlorate （LiC104） and different plasticizers. XRD and FTIRspectroscopic techniques were used to characterize the structure and the complexation of plasticizer with the host polymermatrix. The role of interaction between polymer hosts and plasticizer on conductivity is discussed using the results ofalternating current （a.c.） impedance studies. TG-DTA and SEM were used for thermal and physical characterizations.Maximum ionic conductivity （3.26 × 10^-4 S·cm^-1） has been observed for ethylene carbonate （EC）-based polymerelectrolytes. Electrochemical performance of the plasticized polymer electrolyte is evaluated in LiFePO4/plasticized polymerelectrolytes （PPEs）/Li coin cell. Good performance with low capacity fading on charge discharge cycling is demonstrated.