Assembled porous flower-like structures of ZnCo₂O₄ and ZnCo₂O₄@C products are prepared by a facile mediated solvothermal process combining with a calcination process. The as-prepared products are characterized by X-ray powder diffractometer (XRD), field emission scanning electron microscopy (FESEM), and transmission electron microscope (TEM). The samples are tested as anode materials for lithium-ion batteries. The results demonstrate that the introduction of C has a significant impact on the morphology and electrochemical performance of the samples. The porous microstructure ZnCo₂O₄@C composites can provide more contact between Li⁺ and electrodes and more effective electron transmission than pure ZnCo₂O₄. When tested as anode materials for lithium-ion batteries, the ZnCo₂O₄@C composites show a high specific capacity of ~ 760.3 mAh/g at a current rate of 0.1C after 100 cycles. This work would be significance of the preparation of complex oxides/carbon composites with porous microstructure as anodes for lithium-ion batteries.

中文翻译：

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多孔花状ZnCo 2 O 4和ZnCo 2 O 4 @C复合材料：易于控制的合成和增强的电化学性能

ZnCo ₂ O ₄和ZnCo ₂ O ₄ @C产物的组装多孔花状结构是通过介导的溶剂热法和煅烧法制备的。所制备的产品通过X射线粉末衍射仪（XRD），场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）进行表征。样品被测试为锂离子电池的负极材料。结果表明，C的引入对样品的形态和电化学性能具有重大影响。多孔微结构ZnCo ₂ O ₄ @C复合材料可以在Li ⁺之间提供更多的接触电极和电子传输比纯ZnCo ₂ O ₄更有效。当作为锂离子电池的负极材料进行测试时，经过100次循环后，ZnCo ₂ O ₄ @C复合材料在0.1C的电流速率下显示出〜760.3 mAh / g的高比容量。这项工作对于制备具有多孔微结构的复合氧化物/碳复合材料作为锂离子电池阳极具有重要意义。