With increasing energy demands and the growing adaptation of green transportation and grid storage, energy storage devices face increasing demands and challenges. As a new generation of materials, oxyhydroxide (MOOH) has attracted increasing attention due to their unique electronic structures, variable valence states, and ultra-high theoretical energy storage capacity. Here, we discuss the advantages and current achievements of MOOH (M = Fe, Co, Ni, Mn, V, and Al) in electrochemical energy storage (EES) devices, including supercapacitors (SCs), lithium-ion batteries (LIBs), and sodium-ion batteries (SIBs). Modification strategies of MOOH hold particular promise for EES. We provide a detailed summary and discussion of nanostructure design, defect engineering, and composite engineering, which provide new avenues to overcome the existing limitations of MOOH materials. Additionally, we believe that innovations in material modification and understanding their applicability to various energy storage needs warrant further exploration. Finally, we proposed a short conclusion and outlook, along with current challenges and prospects of MOOH in the field of energy storage.

随着能源需求的增加以及绿色交通和电网存储的日益适应，储能设备面临越来越多的需求和挑战。羟基氧化物（MOOH）作为新一代材料，由于其独特的电子结构、可变价态和超高的理论储能能力而受到越来越多的关注。在这里，我们讨论了 MOOH（M = Fe、Co、Ni、Mn、V 和 Al）在电化学储能（EES）设备中的优势和当前成就，包括超级电容器（SCs）、锂离子电池（LIBs）、和钠离子电池（SIB）。MOOH 的修改策略对 EES 具有特殊的前景。我们对纳米结构设计、缺陷工程和复合工程进行了详细的总结和讨论，这为克服 MOOH 材料的现有局限性提供了新的途径。此外，我们认为材料改性方面的创新以及了解其对各种储能需求的适用性值得进一步探索。最后，我们提出了一个简短的结论和展望，以及 MOOH 在储能领域的当前挑战和前景。