The cycle performance of Li–O₂ batteries is significantly enhanced by using a PU/SiO₂/GF nanocomposite separator, which effectively protects the Li anode from corrosion by soluble oxidative intermediates from the ORR, and the dendritic growth of Li crystals during cycling is also inhibited.

We demonstrate thein situconstruction of embedded FeCo alloy nanoparticles in Nitrogen-doped bamboo-like carbon nanotubes with a large power density of 200.4 mW cm⁻²and a robust cycling performance over 445 h for Zn-air battery.

Enhancing ionic conductivity and electrolyte uptake is of significance for gel polymer electrolytes (GPEs) for flexible zinc‐air batteries (FZABs). Herein, a composite mesoporous silica/polyacrylamide (5 wt.% mPAM) GPE is constructed with comparable ionic conductivity to aqueous electrolytes, where the ionic conductivity is up to 337 mS cm⁻¹, and the weight loss after exposing in air 72 h is less than 18%, owing to the excellent electrolyte uptake and continuous ion migration network provided by the mesoporous silica fillers. When used as a quasi‐solid‐electrolyte, the rechargeable FZAB exhibited high electrochemical performance and structural stability, where the peak power density is up to 162.8 mW cm⁻², and the initial charge–discharge potential gap is as low as 0.62 V, resulting in a long lifespan exceeding 110 h, showcasing the combination of high durability, cost‐effectiveness and easy production for practical applications.