Abstract Recent developments in pliable electrode materials for lithium ion batteries (LIBs) have attracted much attention. However, flexible and robust separator with high ionic conductivity and thermal stability is also eagerly anticipated for advanced secondary batteries. Here porous polyurethane@graphene oxide (PU@GO) membranes prepared by electrospun technique have been developed as ideal separator candidates for high-performance LIBs. Electrolyte-uptake capacity and ionic conductivity of the flexible PU@GO separators are superior to those of commercial Celgard separators at 733% and 3.73 mS cm−1, respectively, resulting in better battery performances in terms of impedance, specific discharge capacity and cycle life.

中文翻译：

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用于高级锂离子电池的静电纺 PU@GO 隔膜

摘要 锂离子电池（LIBs）柔性电极材料的最新发展引起了广泛关注。然而，对于先进的二次电池，也热切期待具有高离子电导率和热稳定性的柔性和坚固的隔膜。在这里，通过电纺技术制备的多孔聚氨酯@氧化石墨烯（PU@GO）膜已被开发为高性能锂离子电池的理想隔膜候选者。柔性 PU@GO 隔膜的电解质吸收能力和离子电导率分别优于商业 Celgard 隔膜的 733% 和 3.73 mS cm-1，从而在阻抗、比放电容量和循环寿命方面具有更好的电池性能.