发表机构
Nuclear Physics Institute of CAS（捷克科学院核物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过离子溅射在PE隔膜上涂覆LAGP纳米薄膜并掺杂Ni、Co改性，利用SEM和阶梯伏安法验证其能有效抑制多硫化物穿梭效应，提升薄型Li-S电池性能。
AI 中文摘要
在聚乙烯（PE）隔膜上使用薄固体电解质层已被探索作为一种潜在策略，以缓解锂硫（Li-S）电池中的多硫化物穿梭效应，这一现象是导致其寿命显著缩短的主要原因。虽然某些固体电解质（如LAGP）已展现出有效抑制穿梭效应的能力，但其脆性陶瓷特性限制了其应用，尤其是在柔性电子设备中。通过离子溅射技术将LAGP纳米薄膜涂覆在PE隔膜上，并结合聚合物隔膜的机械柔韧性和薄度以及LAGP的电化学优势（得益于其类NASICON结构和高离子电导率），提供了一种有前景的解决方案。在本研究中，采用离子溅射技术将LAGP纳米薄膜涂覆在PE隔膜上，并进一步用Ni和Co等铁性元素进行改性。使用扫描电子显微镜（SEM）分析了涂覆隔膜的表面形貌，并采用阶梯伏安法评估了涂层引起的电化学性能和改性效果。结果表明，使用带有薄LAGP层的PE隔膜显著影响多硫化物扩散并抑制穿梭效应，从而减少Li-S电池中的不良过程。
英文摘要
The use of a thin solid electrolyte layer on polyethylene (PE) separators has been explored as a potential strategy to mitigate the polysulfide shuttle effect in lithium-sulfur (Li-S) batteries, a phenomenon responsible for significantly reducing their lifespan. While some solid electrolytes, such as LAGP , have demonstrated the ability to effectively suppress the shuttle effect, their brittle ceramic nature limits their application, particularly in flexible electronics. Coating PE separators with LAGP nanofilms offers a promising solution by combining the mechanical flexibility and thinness of polymer separators with the electrochemical advantages of LAGP, due to its NASICON-like structure and high ionic conductivity. In this study, PE separators were coated with LAGP nanofilms using the ion sputtering technique and further modified with ferroic elements such as Ni and Co. The surface morphology of the coated separators was analyzed using scanning electron microscopy (SEM), and staircase voltammetry was employed to evaluate the electrochemical performance and modifications induced by the coatings. The results demonstrate that the use of PE separators with a thin LAGP layer significantly influences polysulfide diffusion and suppresses the shuttle effect, thereby reducing unwanted processes in Li-S batteries.
