Benefiting from high-volumetric-specific capacity and superior safety as well as abundant Al source, rechargeable aluminum batteries (ABs) have attracted much attention. However, the lack of cathode materials with the desirable capacity and Al³⁺ insertion/extraction kinetics has severely limited their practical implementation. Herein, we report organic 9,10-anthraquinone (AQ) as Al-storage cathode with favorable Al³⁺ uptake kinetics, which demonstrates a reversible capacity of 215.2 mAh g⁻¹ and good cycling stability. The AQ achieves the reversible uptake/removal of Al³⁺ ions as manifested by a plateau voltage of 1.1 V and a voltage polarization of 0.1 V. Density functional theory (DFT) is performed to reveal the binding site of carbonyl group and the metallic state of Al-inserted configuration, which contribute to fast Al³⁺ diffusion kinetics and high electronic conductivity. This work provides insights and guidance on the design of organic electrodes for the Al-storage performance improvement.

得益于高容量比容量，卓越的安全性以及丰富的铝源，可再充电铝电池（ABs）引起了广泛的关注。然而，缺乏具有所需容量和Al ³⁺插入/萃取动力学的阴极材料严重限制了它们的实际应用。在此，我们报道有机9,10-蒽醌（AQ）作为具有良好Al ³⁺吸收动力学的Al储存阴极，显示出215.2 mAh g ^-1的可逆容量和良好的循环稳定性。AQ可实现Al ³⁺的可逆吸收/去除离子的稳定电压为1.1 V，极化电压为0.1V。通过密度泛函理论（DFT）揭示了羰基的结合位点和Al插入构型的金属态，这有助于快速形成Al ^{3 +}扩散动力学和高电导率。这项工作为有机电极的设计提供了见识和指导，以提高铝存储性能。