Herein, hierarchical CuCo₂O₄@NiMoO₄ core–shell nanowire arrays were successfully synthesized on Ni foam via hydrothermal processes as a battery-like electrode. Owing to the unique core–shell structure and the synergetic effect from CuCo₂O₄ and NiMoO₄, the resulting CuCo₂O₄@NiMoO₄ core–shell arrays exhibit a high specific capacitance of 2207 F g⁻¹ at 1.25 A g⁻¹ and good rate capability with only about 4.4% capacitance loss after cycling tests. Furthermore, we assemble the corresponding asymmetric supercapacitor using CuCo₂O₄@NiMoO₄ (positive electrode) and activated carbon (negative electrode), which delivers a high energy density (about 40 W h kg⁻¹) and good cycle stability. Thereby, these electrochemical performances demonstrated that as-fabricated CuCo₂O₄@NiMoO₄ core–shell arrays are promising candidates as electrodes for high-performance supercapacitors.

中文翻译：

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分层CuCo ₂ O ₄ @NiMoO ₄核壳混合阵列，作为超级电容器的电池状电极

在这里，通过水热法成功地在镍泡沫上合成了类似电池状电极的分层CuCo ₂ O ₄ @NiMoO ₄核-壳纳米线阵列。由于独特的核-壳结构和从CUCO的协同效果₂ ö ₄和NiMoO ₄，将所得CUCO ₂ ö ₄ @NiMoO ₄芯-壳阵列表现出2207 F G高的比电容^-1 1.25 A G ^{- 1}和良好的速率能力，循环测试后电容损耗仅为4.4％左右。此外，我们使用CuCo组装了相应的不对称超级电容器₂ O ₄ @NiMoO ₄（正电极）和活性炭（负电极），可提供高能量密度（约40 W h kg ^-1）和良好的循环稳定性。因此，这些电化学性能表明，已制成的CuCo ₂ O ₄ @NiMoO ₄核-壳阵列有望成为高性能超级电容器的电极。