Lithium (Li) metal anodes are demanded by high‐energy Li batteries because Li has the highest capacity and low electrode potential. However, Li metal anodes usually show poor cyclability and unsafe deposition at anode/separator interfaces, which may increase the risk of short circuits. In this work, we fabricate a sandwiched structure of reduced graphene oxides (rGO) with silicon (Si) quantum dots (QDs) as the inducing agents between rGO layers. Because of the lithiophilicity of Si QDs, Li growth is favorably guided away from the unsafe anode/separator interface towards the interlayer positions, significantly improving the cyclability and safety of the Si‐QDs‐sandwiched rGO anode. The uniformly‐distributed Si QDs and layered electrode structure can regulate Li plating/stripping to avoid the superficial Li growth and reduce the accumulation of solid electrolyte interphase. The growth‐guiding strategy using the sandwiched structure provides a new approach to fabricating high energy Li‐based battery anodes.

中文翻译：

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硅量子点在夹层金属阳极中诱导均匀的锂电镀

高能量锂电池需要锂（Li）金属阳极，因为锂具有最高的容量和较低的电极电位。然而，锂金属阳极通常显示出差的循环性和在阳极/隔板界面处不安全的沉积，这可能会增加发生短路的风险。在这项工作中，我们用硅（Si）量子点（QDs）作为rGO层之间的诱导剂制造了还原型氧化石墨烯（rGO）的夹心结构。由于Si QD的亲硫性，有利地将Li的生长从不安全的阳极/隔板界面引导到中间位置，从而显着提高了夹有Si-QDs的rGO阳极的可循环性和安全性。均匀分布的硅量子点和层状电极结构可以调节锂的电镀/剥离，避免表面锂的生长并减少固体电解质相间的积累。使用夹层结构的增长导向策略为制造高能锂基电池阳极提供了一种新方法。