The wide application of lithium metal batteries (LMBs) is greatly limited by the notorious side reactions and dendrite growth due to the highly reactive nature of lithium metal paired with the traditional liquid electrolytes. Herein, we report a synergetic strategy by combining ex situ chemical pretreatment on lithium metal anodes (LMAs) and in situ cationic polymerization of DOL to tackle these issues. LiDFOB is unprecedentedly employed as the initiator to launch the in situ fabrication of poly-DOL gel polymer electrolytes (GPEs), resulting in integrated ionic connections between the electrodes and electrolyte. Furthermore, robust and compatible interfaces are successfully constructed via pretreatment of LMAs and establishment of a LiDFOB–LiTFSI dual-salt system in quasi-solid lithium metal batteries (QSLMBs). Consequently, both the solid electrolyte interphase (SEI) and cathode electrolyte interphase (CEI) containing N- , F- , and B-rich inorganic components are formed on the anode and cathode. The novel poly-DOL GPE exhibits excellent compatibility with various intercalating cathodes, such as LiFePO₄, LiMn₂O₄ and LiCoO₂. This work provides a facile and accessible approach to manufacture qualified LMBs with improved safety and elongated lifetime.

中文翻译：

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通过异地阳极预处理和内置凝胶聚合物电解质的协同策略实现了长周期且安全的锂金属电池

锂金属电池（LMB）的广泛应用受到臭名昭著的副反应和枝状晶体生长的限制，这是由于锂金属与传统液体电解质配对的高反应性所致。在本文中，我们报告了一种协同策略，将锂金属阳极（LMA）的非原位化学预处理与DOL的原位阳离子聚合相结合，以解决这些问题。LiDFOB被空前地用作引发剂，以开始原位制造聚DOL凝胶聚合物电解质（GPE），从而在电极和电解质之间形成集成的离子连接。此外，通过以下方式成功构建了强大且兼容的接口在准固态锂金属电池（QSLMB）中对LMA进行预处理并建立LiDFOB–LiTFSI双盐系统。因此，在阳极和阴极上均形成了含有富含N-，F-和B的无机成分的固体电解质相（SEI）和阴极电解质相（CEI）。新型的poly-DOL GPE与各种插层式阴极，例如LiFePO ₄，LiMn ₂ O ₄和LiCoO ₂表现出优异的相容性。这项工作为制造合格的LMB提供了一种简便易行的方法，可提高安全性并延长使用寿命。