![]() Consequently, the Li/LiFePO 4 cells show high cycling stability (96.05% after 350 cycles), good rate performance (125 mA h g −1 at 5.0 C), low resistance, and stable open circuit voltage at 160☌. The separator features low moisture uptake (∼0%), fast LE diffusion (454 ms), and high LE uptake (287.8%), LE retention rate, and Li + conductivity. Here, we report a design idea of superLEphilic/superhydrophobic and thermostable separators by modifying the Celgard separator using silicone nanofilaments. Trace water could result in poor performance and safety hazard of Li metal batteries. ![]() Although some modified separators exhibit improved wettability, they are hydrophilic, causing inevitable moisture uptake. Conventional polyolefin separators suffer from poor wettability to liquid electrolytes (LEs).
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