Hybrid solid electrolytes (HSEs) with satisfactory ionic conductivities, good flexibilities, and ideal interface compatibilities are crucial for the development of all-solid-state lithium-metal batteries. However, Li dendrites and sluggish interfacial Li⁺ transfer dynamics between the Li metal and HSEs restrict practical applications. Herein, a facile strategy is proposed to promote homogeneous interfacial Li⁺ migration by modifying HSEs by using nitrogen plasma. N₂ plasma not only decreases the crystallinity and glass transition temperature of HSE but also in-situ generates an ultra-stable and conductive Li₃N layer on the HSE surface. This conductive layer promotes interfacial Li⁺ migration and favorable wettability, thus effectively improving Li⁺ transfer dynamics and homogeneous deposition. Therefore, a HSE modified by N₂ plasma for 10 s exhibits a low interfacial impedance of 26.5 Ω cm⁻² and a high Li⁺ conductivity of 7.35 × 10⁻⁵ S cm⁻¹ at 30 °C. Moreover, a symmetric Li|HSE|Li battery exhibits a stable plating/stripping capability without Li dendrite growth at a current density of 0.1 mA cm⁻² during continuous operation over 1000 h. In addition, an all-solid-state Li|HSE|LiFePO₄ battery exhibits an initial specific capacity of 145.0 mAh g⁻¹ at 1 C with a high capacity retention of 92.4% (134.0 mAh g⁻¹) after 140 cycles.

中文翻译：

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使用简便的 N2 等离子体策略促进全固态锂金属电池的均匀界面 Li+ 迁移

具有令人满意的离子电导率、良好的柔韧性和理想的界面相容性的混合固体电解质（HSE）对于全固态锂金属电池的发展至关重要。然而，锂枝晶和锂金属与 HSE 之间缓慢的界面 Li ⁺转移动力学限制了实际应用。在此，提出了一种简便的策略，通过使用氮等离子体修饰 HSEs来促进均匀的界面 Li ^+迁移。N ₂等离子体不仅降低了HSE的结晶度和玻璃化转变温度，而且在HSE表面原位生成了超稳定导电的Li ₃ N层。该导电层促进界面 Li ⁺迁移和良好的润湿性，从而有效地改善锂^离子迁移动力学和均匀沉积。因此，由 N ₂等离子体改性 10 s 的 HSE在 30 ° C 时表现出 26.5 Ω cm ^-2的低界面阻抗和7.35 × 10 ^-5  S cm ^-1的高 Li ⁺电导率。此外，对称的 Li|在 0.1 mA cm ^-2的电流密度下，HSE|Li 电池在连续运行超过 1000 小时期间表现出稳定的电镀/剥离能力，没有锂枝晶生长。此外，全固态 Li|HSE|LiFePO ₄^{电池在 1 C 下表现出 145.0 mAh g -1}的初始比容量，在 140 次循环后具有 92.4% (134.0 mAh g ^-1 )的高容量保持率。