To overcome the disadvantages of traditional powder electrodes, such as the insufficient performance, the aggregation of active materials, and the complex fabrication process, rationally constructing free-standing electrode materials with hierarchical architecture is an effective and promising method, which could further improve the electrochemical properties. Herein, using metal-organic framework nanoarrays (MOF_NAs) as self-sacrificial templates and SiC nanowires (SiC_NWs) network as nanoscale conductive skeletons, we successfully fabricated the hierarchical core-shell SiC_NWs@NiCo₂O_4NAs on carbon cloth (CC) substrate. Taking advantages of structural merits, such as hierarchical porous triangle-like NiCo₂O_4NAs, the interwoven SiC_NWs network and conductive CC substrate, when evaluated as a binder-free supercapacitor electrode, the CC/SiC_NWs@NiCo₂O_4NAs shows a high specific capacitance of 1604.7 F g^-1 (specific capacity of 222.9 mA h g^-1) at the 0.5 A g^-1, good rate performance, and excellent cycling stability. Significantly, the hybrid supercapacitor assembled with CC/SiC_NWs@NiCo₂O_4NAs as the cathode and MOF derived CC/SiC_NWs@C_NAs as the anode, could deliver a high specific density of 49.9 W h kg^-1 at a specific power of 800 W kg^-1, stable cycling performance, and good flexibility. Impressively, this feasible strategy for fabricating hierarchical structure displays great potential in the field of energy storage.

为克服传统粉状电极的性能不足，活性物质聚集，制造工艺复杂等缺点，合理构建具有分层结构的自立式电极材料是一种行之有效的方法，可以进一步改善电化学性能。属性。在本文中，我们使用金属有机框架纳米阵列（MOF _NAs）作为自我牺牲模板，并使用SiC纳米线（SiC _NWs）网络作为纳米级导电骨架，我们成功地在碳布（CC）上制备了分层的核壳SiC _NW @NiCo ₂ O _4NAs。 ） 基质。利用结构优点，例如分层多孔三角形镍钴合金_2个Ó _4NAs，交织的SiC_纳米线网络和导电基底CC，当作为不含粘合剂的超电容器电极评价中，CC /碳化硅_纳米线@NiCo ₂ ö _4NAs示出了高的比的1604.7 F G电容^-1的222.9（比容量在0.5 A g ^-1时达到mA hg ^-1），良好的倍率性能和出色的循环稳定性。值得注意的是，混合超级电容器以CC / SiC _NW @NiCo ₂ O _4NAs为阴极，_并由MOF衍生出CC / SiC _NW @C _NAs。作为阳极，可以在800 W kg ^-1的比功率下提供49.9 W h kg ^-1的高比密度，稳定的循环性能和良好的柔韧性。令人印象深刻的是，这种可行的分层结构制造策略在储能领域显示出巨大潜力。