Abstract Nickel sulfides are regarded as advanced candidates for anode of lithium ion battery (LIBs). However, the huge volume change and the poor conductivity hinder their practical application in energy storage. In this paper, Ni3S2 nanoparticles in-situ encapsulated into nitrogen and sulfur dual-doped carbon nanotubes (Ni3S2/NSCNTs) hybrid is synthesized by a facile and scalable approach. When used as an anode for LIBs, Ni3S2/NSCNTs hybrid exhibits a long cycling life (84% capacity retention after 300 cycles at 0.5 A g−1) and an outstanding rate capability (374.1 mAh g−1 at 3 A g−1). These results are ascribed to the special and robust architecture, in which the NSCNTs can enhance the conductivity and maintain structural integrity of hybrid during cycles. This study demonstrates a simple and scalable synthesis strategy toward preparing anode materials for electrochemical energy storage.

中文翻译：

---

具有 N、S 双掺杂碳纳米管的封装 Ni3S2 纳米颗粒：用于锂存储的稳健结构

摘要 硫化镍被认为是锂离子电池（LIBs）负极的先进候选材料。然而，巨大的体积变化和较差的导电性阻碍了它们在储能中的实际应用。在本文中，Ni3S2 纳米颗粒原位封装在氮和硫双掺杂碳纳米管 (Ni3S2/NSCNTs) 杂化物中，通过一种简便且可扩展的方法合成。当用作 LIB 的阳极时，Ni3S2/NSCNTs 混合物表现出较长的循环寿命（0.5 A g-1 下 300 次循环后容量保持率为 84%）和出色的倍率性能（3 A g-1 下为 374.1 mAh g-1） . 这些结果归因于特殊而坚固的结构，其中 NSCNT 可以提高导电性并在循环过程中保持混合结构的完整性。