Quasi-Solid-State Ion-Conducting Arrays Composite Electrolytes with Fast Ion Transport Vertical-Aligned Interfaces for All-Weather Practical Lithium-Metal Batteries

The composite gel electrolyte with low tortuosity ion-conducting arrays (GPE/ICAs) exhibiting high room-temperature ionic conductivity (1.08 mS cm −1 ) was successfully prepared by directionally growing ice crystals and in-situ polymerization. The stable and rapid Li + migration through ICAs in the GPE is proved by 6 Li solid-state nuclear magnetic resonance and synchrotron radiation X-ray diffraction combined with computer simulations. Li/LiFePO 4 full cells using GPE/ICAs exhibit excellent cycle performance and high-capacity retention at wide temperature (0–60 °C), which has the potential towards all-weather practical solid-state batteries.