The potential of sodium-ion batteries (SIBs), like their utilization in the storage of substantial amounts of energy, has been in the spotlight in recent years. Herein, synthesis of the hybrid that CoTe enclosed within N-doped carbon nanonecklace (CoTe/N-CNN) is reported. As a SIBs anode, CoTe/N-CNN displays excellent cycling performance (188.9 mAh g at 1.0 A g after 1200 cycles) and noteworthy rate capacity (157.0 mAh g at 5.0 A g). These high performances can be ascribed to the distinctive necklace-like configuration, which alleviates the stress and self-agglomeration of CoTe nanoparticles and offers active sites and high-efficiency electrolyte diffusion routes. This provides a facile strategy for preparing advanced tellurides for energy storage solutions.

中文翻译：

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CoTe2 封装在 N 掺杂碳纳米项链中作为钠离子电池的阳极

钠离子电池（SIB）的潜力，例如其在存储大量能量方面的利用，近年来一直受到人们的关注。在此，报道了 CoTe 封装在 N 掺杂碳纳米项链中的杂化物（CoTe/N-CNN）的合成。作为 SIBs 负极，CoTe/N-CNN 显示出优异的循环性能（1200 次循环后在 1.0 A g-1 下为 188.9 mAh g-1）和值得注意的倍率容量（在 5.0 A g-1 下为 157.0 mAh g-1）。这些高性能可归因于独特的项链状结构，它减轻了 CoTe 纳米颗粒的应力和自团聚，并提供活性位点和高效电解质扩散路线。这为制备用于储能解决方案的先进碲化物提供了一种简便的策略。