Abstract Ferrous-cupric oxalate hydrate/multiwalled carbon nanotubes composite was prepared by solvothermal method and self-assembly technique. The structural and morphological characterization show that the CuC2O4·yH2O with three-dimension spherical shape is uniformly dispersed among the microrod-liked FeC2O4·2H2O particles embedded by carbon nanotubes. Cu nanoparticles fabricated in first few cycles and carbon nanotubes provide a high conductivity, enhance electrical path for electrochemical reaction and improve the activity of complex nanocomposites, thus resulting in good lithium storage performance: 530 and 482 mAh g−1 at current densities of 0.5 and 2 A g−1 after 200 cycles. This unique design can shorten the preparation process, completely solve the decomposition of oxalate matrix and improve the homogeneity of synthetic materials.

中文翻译：

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草酸亚铜水合物结合多壁碳纳米管复合负极用于锂离子电池

摘要 采用溶剂热法和自组装技术制备了草酸亚铁-铜水合物/多壁碳纳米管复合材料。结构和形态表征表明，三维球形的CuC2O4·yH2O均匀分散在碳纳米管包埋的微棒状FeC2O4·2H2O颗粒中。在前几次循环中制造的铜纳米颗粒和碳纳米管提供了高导电性，增强了电化学反应的电路径并提高了复合纳米复合材料的活性，从而产生了良好的锂存储性能：在 0.5 和 0.5 2 A g-1 200 次循环后。这种独特的设计可以缩短制备过程，彻底解决草酸盐基质的分解问题，提高合成材料的均质性。