Nanoporous Ni with rational pore structure decorated with Ni(OH)2 nanosheets (Ni(OH)2@NPN) was fabricated by a cost-effective process of template-directed electrodeposition combined with surface conversion. Nitrocellulose (NC) template controls the pore structure of NPN with interconnected pore channels and diameters of a few hundred nanometers, which provides short pathways for rapid electrolyte diffusion, and offers enough space for the growth of Ni(OH)2 nanosheets. The direct conversion of Ni(OH)2 nanosheets from the surface metallic Ni of NPN ensures a low contact resistance at the interface and high utilization of Ni(OH)2. Benefiting from the structural features, Ni(OH)2@NPN shows significantly improved electrochemical performance.

中文翻译：

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用超薄 Ni(OH)2 纳米片装饰的具有合理孔结构的纳米多孔镍作为高级超级电容器电极的简易制造

通过具有成本效益的模板定向电沉积结合表面转化工艺制备了具有合理孔结构的纳米多孔镍，其装饰有 Ni(OH)2 纳米片 (Ni(OH)2@NPN)。硝化纤维素 (NC) 模板通过互连的孔道和数百纳米的直径控制 NPN 的孔结构，这为电解质的快速扩散提供了短路径，并为 Ni(OH)2 纳米片的生长提供了足够的空间。Ni(OH)2 纳米片从 NPN 的表面金属 Ni 的直接转化确保了界面处的低接触电阻和 Ni(OH)2 的高利用率。受益于结构特征，Ni(OH)2@NPN 显示出显着改善的电化学性能。