Abstract The increasing requirement for clean energy storage has urged the advancement of lithium ion batteries (LIBs) with high specific capacity and cycling stability. In this work, we report a facile method to synthesize hybrid membranes of NiCo2S4 nanorod arrays uniformly grown onto each carbon nanofiber (NiCo2S4/CNF), which as anode materials can achieve high performance for LIBs. The conductive networks of CNFs can facilitate the electron transport at the interfaces and diffusion of ions to readily react with NiCo2S4, thus leading to increased lithium storage. The CNFs can mitigate the drastic expansion/contraction of NiCo2S4 nanorods, resulting in enhanced cycling stability. As a consequence, the LIBs with NiCo2S4/CNF hybrid membranes as anode materials exhibit high capacity (1060 mA h/g) at 0.2 A/g and good durability for 100 cycles.

中文翻译：

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在碳纳米纤维上生长的 NiCo2S4 纳米棒分层复合材料作为高性能锂离子电池的负极

摘要 对清洁能源存储的日益增长的需求推动了具有高比容量和循环稳定性的锂离子电池（LIBs）的发展。在这项工作中，我们报告了一种简单的方法来合成均匀生长在每根碳纳米纤维上的 NiCo2S4 纳米棒阵列的混合膜（NiCo2S4/CNF），作为负极材料可以实现 LIB 的高性能。CNF 的导电网络可以促进界面处的电子传输和离子的扩散，从而容易与 NiCo2S4 反应，从而增加锂的储存。CNFs 可以减轻 NiCo2S4 纳米棒的剧烈膨胀/收缩，从而提高循环稳定性。因此，以 NiCo2S4/CNF 混合膜作为负极材料的 LIB 在 0.2 A/g 下表现出高容量（1060 mA h/g）和 100 次循环的良好耐久性。