Lithium metal anode is regarded as the ultimate choice for next-generation energy storage systems, due to the lowest negative electrochemical potential and super high theoretical specific capacity. However, the growth of lithium dendrite during the cycling process is still one of the most critical bottlenecks for its application. In this work, a slurry-like hybrid electrolyte is proposed towards the application for lithium metal anode, which is composed of a liquid electrolyte part and a nanometric silane-Al₂O₃ particle part. The hybrid electrolyte shows high ionic conductivity (3.89 × 10⁻³ S cm⁻¹ at 25 °C) and lithium-ion transference number (0.88). Especially, the resistance of hybrid electrolyte decreases compared to that of liquid electrolyte, while the viscosity of hybrid electrolyte increases. It is demonstrated that the hybrid electrolyte can effectively suppress the growth of lithium dendrite. Stable cycling of Li/Li cells at a current density up to 1 mA cm⁻² is possible. The hybrid electrolyte helps to uniform the lithium ion flux inside the battery and partly comes from the formation of a rigid and highly conductive hybrid interfacial layer on the surface of lithium metal. This work not only provides a fresh way to stabilize lithium metal anode but also sheds light on further research for electrolyte optimization and design of lithium metal battery system.

由于最低的负电化学势和极高的理论比容量，锂金属阳极被视为下一代储能系统的最终选择。然而，锂枝晶在循环过程中的生长仍然是其应用中最关键的瓶颈之一。在这项工作中，针对锂金属阳极的应用提出了一种浆状混合电解质，该电解质由液体电解质部分和纳米硅烷-Al ₂ O ₃颗粒部分组成。混合电解质显示出高离子电导率（3.89×10 ^-3  S cm ^-1在25°C下）和锂离子转移数（0.88）。特别是，与液体电解质相比，混合电解质的电阻降低，而混合电解质的粘度增加。证实了该混合电解质可以有效地抑制锂枝晶的生长。Li / Li电池在高达1 mA cm ^-2的电流密度下可以稳定循环。混合电解质有助于使电池内部的锂离子通量均匀化，并且部分来自在锂金属表面上形成的刚性且高导电性的混合界面层。这项工作不仅为稳定锂金属阳极提供了新的途径，而且为进一步优化电解质和设计锂金属电池系统提供了启示。