Building an artificial interphase layer for tackling uncontrollable Zn dendrites and serious side reactions is a highly desirable strategy, but it is often hampered by the limited Zn²⁺ transport. Here, a stable fluorine-doped amorphous carbon (CF) artificial layer is constructed on a Cu current collector (CF-Cu) via facile carbonization treatment of a fluoropolymer coating to realize underlying Zn deposition. As evidenced experimentally and theoretically, this inorganic CF layer with ionic conductivity and electronic insulation successfully triggers dendrite-free Zn deposition at the CF-Cu interface with preferred Zn(002) crystal plane stacking parallel to the substrate surface, thus greatly promoting the inhibition of Zn-dendrites and blocking of interfacial side reactions. The introduced fluorine atoms as abundant zincophilic sites play an important role in driving fast zinc-ion transfer kinetics, which can partly convert into ZnF₂ as an artificial solid Zn²⁺ conductor to further guide uniform Zn deposition. Consequently, the CF-Cu electrode enables high reversibility with 99% coulombic efficiency and a long cycling stability of 1900 cycles at 2 mA cm^–2. The integrated CF-Cu@Zn anode achieves up to 2200 h cycles with a low voltage polarization. This study provides inspiration for the design of artificial interphase layers for stable nondendritic metal batteries.

中文翻译：

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用于超稳定锌负极的含氟非晶碳层的多功能人工界面

构建人工界面层以应对不可控的 Zn 枝晶和严重的副反应是一种非常理想的策略，但它经常受到有限的 Zn ^2+的阻碍运输。在这里，通过对含氟聚合物涂层进行简单的碳化处理，在铜集流体（CF-Cu）上构建了稳定的氟掺杂无定形碳（CF）人工层，以实现底层锌的沉积。正如实验和理论所证明的那样，这种具有离子导电性和电子绝缘性的无机 CF 层成功地在 CF-Cu 界面上触发了无枝晶的 Zn 沉积，优选的 Zn(002) 晶面平行于基板表面堆叠，从而大大促进了抑制锌枝晶和界面副反应的阻断。引入的氟原子作为丰富的亲锌位点在驱动快速锌离子转移动力学中起重要作用，它可以部分转化为 ZnF ₂作为人造固体 Zn ²⁺导体进一步引导均匀的锌沉积。^{因此，CF-Cu 电极实现了高可逆性，具有 99% 的库仑效率和 2 mA cm –2}下 1900 次循环的长循环稳定性。集成的 CF-Cu@Zn 阳极可实现长达 2200 小时的低电压极化循环。该研究为稳定非树枝状金属电池的人工界面层设计提供了灵感。