Abstract Development of the lithium ion-conducting membrane with high ionic conductivity and good interfacial stability is a major challenge for lithium-oxygen batteries with high energy density. Herein, we design the dual membrane composed of Li+ ion-conducting ceramic-based composite polymer membrane and glass fiber membrane. The optimized membrane exhibited a high ionic conductivity of 8.1 × 10−4 S cm−1 at ambient temperature and retained an electrolyte solution well in the membrane. The dual membrane also effectively suppressed the lithium dendrite growth and blocked superoxide anion radical attack toward polymer in the composite polymer membrane. The lithium-oxygen cell employing dual membrane exhibited improved cycle life (> 70 cycles) at a constant current density of 0.1 mA cm−2, which was much better than the cell with either a composite polymer membrane alone or a glass fiber membrane alone.

中文翻译：

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一种用于可充电锂氧电池的复合聚合物膜和玻璃纤维膜组成的双膜

摘要 开发具有高离子电导率和良好界面稳定性的锂离子导电膜是高能量密度锂氧电池面临的重大挑战。在此，我们设计了由 Li+ 离子导电陶瓷基复合聚合物膜和玻璃纤维膜组成的双膜。优化后的膜在环境温度下表现出 8.1 × 10-4 S cm-1 的高离子电导率，并在膜中很好地保留了电解质溶液。双膜还有效地抑制了锂枝晶生长并阻止了超氧阴离子自由基对复合聚合物膜中聚合物的攻击。采用双膜的锂氧电池在 0.1 mA cm−2 的恒定电流密度下表现出改善的循环寿命（> 70 个循环），