Abstract Herein, we present a large-scale growth of porous hierarchical structure of three-dimensional (3D) flower-shaped nickel cobaltite (PFNC) nanosheets on Ni foam current collector with hardy adhesion as high-performance electrode for supercapacitors via facile hydrothermal method and then post annealing treatment. The availability of porous architecture increases the electroactive cites and facilitates speedy ion and electron conduction during electrochemical reactions. The prepared material shows an excellent specific capacitance of 2100 F g−1 (4.24 F cm−2) at 5 mV s−1 scan rate by cyclic voltammetry analysis. Overall results divulge that the binder-less PFNC electrode will be a promising electrode material for supercapacitors.

中文翻译：

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分级多孔花状钴酸镍纳米片作为无粘合剂电极用于超高电容超级电容器应用

摘要 在本文中，我们通过简便的水热法在泡沫镍集流体上大规模生长多孔分层结构的三维（3D）花状钴酸镍（PFNC）纳米片作为超级电容器的高性能电极和然后进行后退火处理。多孔结构的可用性增加了电活性引用并促进了电化学反应过程中的快速离子和电子传导。通过循环伏安法分析，制备的材料在 5 mV s-1 扫描速率下显示出 2100 F g-1 (4.24 F cm-2) 的优异比电容。总体结果表明，无粘合剂 PFNC 电极将成为超级电容器的有前途的电极材料。