Antimony (Sb) with stripping/plating behavior is attractive as anode material for aqueous energy storage. However, it suffers from unfavorable ion diffusion and de-solvation issues due to special coordination environment of Sb(III), resulting in poor rate capability. Herein, we regulate the coordination environment by introducing high-affinity Cl⁻ ligands to achieve high-kinetic and reversible Sb stripping/plating. It enables faster diffusion kinetics and lower de-solvation energy barrier to promote the manageable nucleation and deposition of Sb even at ultrahigh current densities on various of collectors (carbon felt, Ti foil and F-doped tin oxide, etc). Notably, the Sb anode on carbon felt substrate delivers coulombic efficiency of 97.0%, high-rate capability (98.4% capacity retention from 20 to 500 mA cm⁻² or 250 C) and satisfactory stability. The as-assembled Co_xNi_y(OH)_z//Sb battery also provides outstanding rate capability and durability. This work provides new inspiration for developing ultrafast Sb-based aqueous energy storage.

具有剥离/电镀行为的锑 (Sb) 作为水系储能的阳极材料很有吸引力。然而，由于Sb(III)的特殊配位环境，它存在不利的离子扩散和脱溶剂化问题，导致倍率性能较差。在此，我们通过引入高亲和力的 Cl ^-配体来调节配位环境，以实现高动力学和可逆的 Sb 剥离/电镀。它能够实现更快的扩散动力学和更低的去溶剂化能垒，以促进 Sb 的可控成核和沉积，即使在超高电流密度下也可以在各种收集器（碳毡、Ti 箔和 F 掺杂氧化锡等）上进行。值得注意的是，碳毡基板上的 Sb 阳极具有 97.0% 的库仑效率，高倍率能力（20 至 500 mA cm 的容量保持率为 98.4%^-2或 250 C) 和令人满意的稳定性。组装后的 Co _x Ni _y (OH) _z //Sb 电池还具有出色的倍率性能和耐用性。这项工作为开发超快锑基水系储能提供了新的灵感。