As an emerging multivalent-ion-based energy storage device, aqueous zinc-ion capacitors (AZICs) combine the merits of zinc-ion batteries with high energy density, excellent safety, low cost and environmental friendliness, and the advantages of supercapacitors with high power density and superior cycling performance. Therefore, AZICs have been considered as a new promising electrochemical energy storage system. Though great progress of AZICs has been made recently, they are still in the infant stage and face many challenges. Specially, the unsatisfactory energy density needs to be improved to realize their practical applications, which calls for high-capacity cathode materials. In this review, after a brief introduction of progress and mechanism for AZICs, we provide a systematical overview of the latest advances in the state-of-art cathode materials. The synthesis route, structure and morphology, electrochemical performance, energy storage mechanism as well as the merits and drawbacks of various cathode materials are comprehensively compared and discussed. Finally, a summary and outlook of the challenges and future perspectives of AZICs were presented. With these, this review might offer some guidance for the future design of dedicated novel cathode materials to realize the great potential of AZICs.

作为一种新兴的多价离子储能器件，水系锌离子电容器（AZICs）结合了锌离子电池能量密度高、安全性好、成本低、环境友好的优点，以及超级电容器高功率的优点。密度和优越的循环性能。因此，AZICs被认为是一种新的有前途的电化学储能系统。尽管近年来AZICs取得了很大进展，但它们仍处于起步阶段，面临着许多挑战。特别是能量密度不尽人意的地方需要提高才能实现实际应用，这就需要高容量的正极材料。在这篇综述中，在简要介绍了 AZICs 的进展和机制之后，我们系统地概述了最先进的正极材料的最新进展。综合比较和讨论了各种正极材料的合成路线、结构和形貌、电化学性能、储能机制以及优缺点。最后，对 AZIC 面临的挑战和未来前景进行了总结和展望。有了这些，这篇综述可能为未来设计专用的新型正极材料以实现 AZIC 的巨大潜力提供一些指导。对 AZIC 面临的挑战和未来前景进行了总结和展望。有了这些，这篇综述可能为未来设计专用的新型正极材料以实现 AZIC 的巨大潜力提供一些指导。对 AZIC 面临的挑战和未来前景进行了总结和展望。有了这些，这篇综述可能为未来设计专用的新型正极材料以实现 AZIC 的巨大潜力提供一些指导。