Aqueous zinc-ion batteries (ZIBs) have attracted attention as large-scale energy storage systems because of their excellent safety, high capacity, eco-friendliness, and low cost. However, the utilization of acid electrolytes in ZIBs causes non-uniform dendrite growth at the anode, which limits their capacity and cycle life. To solve this issue, an advanced anode with high electrical conductivity and good interfacial stability is required. In this study, surface-functionalized graphene was used as a protective layer on the anode surface. Specifically, the surface engineering using plasma treatment is employed to enhance the oxygen-functional groups of graphene layer. The resulting ZIB exhibited superior energy storage performance and reversibility, with an improved specific capacity of 260.0 mA h g⁻¹ at 0.3 A g⁻¹, and an excellent long-term stability and a specific capacity of 139.0 mA h g⁻¹ during 150 cycles at 2.0 A g⁻¹. The proposed method is an easy and feasible method for addressing the anode issues of ZIBs, thus providing new opportunities for stable and high-performance ZIBs.

水系锌离子电池（ZIBs）作为大规模储能系统因其优异的安全性、高容量、生态友好性和低成本而备受关注。然而，在 ZIBs 中使用酸性电解质会导致阳极枝晶生长不均匀，这限制了它们的容量和循环寿命。为了解决这个问题，需要一种具有高导电性和良好界面稳定性的先进阳极。在这项研究中，表面功能化的石墨烯被用作阳极表面的保护层。具体而言，采用等离子体处理的表面工程来增强石墨烯层的含氧官能团。由此产生的 ZIB 表现出优异的储能性能和可逆性，在 0.3 A g 下的比容量提高到 260.0 mA h g ^-1-1 ，并且在2.0 A g ^-1下150次循环期间具有优异的长期稳定性和139.0 mA h g ^-1的比容量。所提出的方法是解决 ZIB 阳极问题的一种简单可行的方法，从而为稳定和高性能的 ZIB 提供了新的机会。