Advanced integrated electrode materials with designed core–shell nanostructure play a crucial role for the application in alternative energy storage system. Herein, hierarchical MoO₃@Ni_xCo_2x(OH)_6x core–shell arrays were equably grown on face of carbon cloth after a series of hydrothermal growth and electrochemical deposition processes. This core–shell arrays structure can not only provide large electroactive surface areas and high speed ion transport paths, but also keep the material structure stable during the process of redox reactions. Thus MoO₃@Ni_xCo_2x(OH)_6x displays excellent electrochemical performance (4.7 F cm⁻² at 10 mA cm⁻²). Moreover, the asymmetric supercapacitor is assembled with MoO₃@Ni_xCo_2x(OH)_6x and carbon nanotubes, which delivers a maximal energy density of 0.50 mWh cm⁻² at 4.25 mW cm⁻², high specific capacitance and superior cycling stability (94.5% capacitance retention after 5000 cycles). We believe that MoO₃@Ni_xCo_2x(OH)_6x arrays could be a great prospective candidate energy storage materials.

具有设计 核壳纳米结构的先进集成电极材料 在替代能源存储系统中的应用中起着至关重要的作用。在此，经过一系列水热生长和电化学沉积过程后，分级 MoO ₃ @Ni _x Co _2x (OH) _6x核-壳阵列均匀地生长在碳布表面。这种核壳阵列结构不仅可以提供大的电活性表面积和高速的离子传输路径，而且可以在氧化还原反应过程中保持材料结构的稳定。因此 MoO ₃ @Ni _x Co _2x (OH) _6x显示出优异的电化学性能（4.7 F cm ^-2在 10 mA cm ^-2）。此外，非对称超级电容器由MoO ₃ @Ni _x Co _2x (OH) _6x和碳纳米管组装而成，在4.25 mW cm ^{-2 时}提供0.50 mWh cm ^-2的最大能量密度、高比电容和优异的循环稳定性（ 5000 次循环后 94.5% 的电容保持率）。我们相信 MoO ₃ @Ni _x Co _2x (OH) _6x阵列可能是一种很有前景的候选储能材料。