Li diffusion and migration are influenced differently by co-solvents in polymer electrolytes based on poly(ɛ-caprolactone) and poly(ethylene oxide)

Key Points

• The study aims to investigate how different co-solvents affect Li diffusion and migration in polymer electrolytes.
• Comparative analysis of the effects of co-solvents on polymer electrolytes based on PCL and PEO.
• Assessment of lithium cation coordination strength in PCL versus PEO.
• Evaluation of lithium transference rates.
• Poly(ɛ-caprolactone) shows lower lithium cation coordination strength than poly(ethylene oxide).
• Co-solvents affect Li diffusion and migration differently in various polymer electrolytes.