Crosslinked poly(ethylene oxide)-based membrane electrolyte consisting of polyhedral oligomeric silsesquioxane nanocages for all-solid-state lithium ion batteries

摘要: Abstract Development of suitable solid membrane electrolyte for all-solid-state lithium ion battery is great importance to address the safety issue arisen from current technology. Herein, we report synthesis and properties a poly(ethylene oxide)-based, crosslinked with nanocages polyhedral oligomeric silsesquioxane through UV-induced crosslinking technique. Benefiting structure, synthesized exhibits an improved mechanical strength electrochemical stability compared sample without structure. The optimized has ionic conductivity 3.83 × 10−4 Scm−1 at 60 °C window 5.3 V. thus-assembled using plate as anode iron phosphate cathode delivers initial discharge capacity 150 mAhg−1 60 °C, higher than that assembled Although more stable decreases 139 mAhg−1 after 42 charging-discharging cycles. Nevertheless, results presented here demonstrate strategy can be effective approach practical solid-state electrolyte.