Abstract Hierarchical ZnO/NiO microstructures with different morphologies were synthesized employing bimetallic Zn/Ni MOFs as the precursor. The MOFs with rambutan- and seaweed-like morphologies were produced using terephthalic acid and polyvinylpyrrolidone. The molar ratio of Zn/Ni plays an important role for the microstructure and capacitance performance of samples. In particular, hierarchical ZnO/NiO hollow microspheres and seaweed microflowers were obtained when the molar ratio of Zn/Ni was 1:2 and 1:1, respectively. The seaweed microflowers exhibited larger specific capacitance and higher rate capability. The composition and unique microstructure result in improved ionic and electronic conductivity and rich electroactive sites for the electrochemical reactions.

中文翻译：

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金属有机骨架衍生的分层 ZnO/NiO 复合材料：形态、微观结构和电化学性能

摘要 以双金属Zn/Ni MOFs为前驱体，合成了不同形貌的分层ZnO/NiO微结构。具有红毛丹和海藻状形态的 MOF 是使用对苯二甲酸和聚乙烯吡咯烷酮生产的。Zn/Ni 的摩尔比对样品的微观结构和电容性能起着重要作用。特别是当Zn/Ni的摩尔比分别为1:2和1:1时，得到了分层的ZnO/NiO空心微球和海藻微花。海藻微花表现出更大的比电容和更高的倍率能力。这种成分和独特的微观结构提高了离子和电子的导电性，并为电化学反应提供了丰富的电活性位点。