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March 8, 2026ACS Applied Energy Materials

Interface-Stabilized LLTO/PVDF/PE Composite Separator Boosts High-Performance All-Solid-State Lithium Metal Batteries

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Authors

WSWenxin ShiQSQingmei SuXLXuan Li

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Overview

Demonstrates enhanced performance and stability in all-solid-state lithium metal batteries using a novel composite separator, suggesting a path toward high-energy-density solutions.

Key Points

  • The aim is to develop a high-performance composite separator for all-solid-state lithium metal batteries with superior ionic conductivity and interfacial stability.
  • Developed a bilayer composite separator with LLTO nanofibers in a PVDF matrix coated on PE substrate.
  • Measured ionic conductivity, lithium-ion transference number, and electrochemical stability.
  • Assessed cycling stability and rate performance in NCM811/Li metal batteries.
  • Achieved ionic conductivity of 5.17 × 10–4 S cm–1 with 60 wt % LLTO.
  • Secured a lithium-ion transference number of 0.81 and stable cycling over 500 hours.
  • Maintained 89.8% capacity retention after 200 cycles at 5C rate and delivered 115.4 mAh g–1 at 5C.

Cite This Study

Shi et al. (2026) studied this question.

synapsesocial.com/papers/69ada836bc08abd80d5bb407https://doi.org/10.1021/acsaem.5c03844
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