Fabrication of single-ion conducting polymer-coated separators and their application in nonaqueous Li-O2 batteries
Fabrication of single-ion conducting polymer-coated separators and their application in nonaqueous Li-O2 batteries
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DOI：
10.1038/s41428-020-00449-9
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发表时间：
2021-01-18
期刊：
影响因子：
2.8
通讯作者：
Ue, Makoto
中科院分区：
文献类型：
--
作者：
Poungsripong, Peeranuch;Tamate, Ryota;Ue, Makoto
非水锂氧（Li-O-2）电池由于其极高的理论能量密度，作为下一代电池的潜在候选者，引起了越来越多的关注。然而，由于许多问题，它们仍处于起步阶段。在这项研究中，通过简单的紫外聚合方法，将具有高度离域阴离子基团的交联单离子导电聚合物网络涂覆在薄的商用聚乙烯膜分离器上。所得到的聚合物涂层改善了电解质的润湿性，抑制了阴离子在隔膜上的扩散。研究了聚合物改性对非水锂离子电池电化学性能的影响。
Nonaqueous lithium-oxygen (Li-O-2) batteries have attracted increasing attention as potential candidates for next-generation batteries due to their significantly high theoretical energy densities. However, they are still in their infancy due to numerous problems. In this study, a cross-linked single-ion conducting polymer network with a highly delocalized anionic group was coated onto a thin commercial polyethylene membrane separator via a facile UV polymerization method. The resulting polymer coating improves the electrolyte wettability and suppresses the diffusion of anionic species across the separator. The effect of the polymer modification of the separator on the electrochemical properties of nonaqueous Li-O-2 cells was investigated.