Herein, a N-doped carbon nanotube encapsulated FeF₃ nanoparticle (FeF₃@N-CNTs) composite was developed via in situ pyrolysis and gas-phase fluorination strategies. The 3D carbon constrained scaffold enhances conversion reaction kinetics and effectively suppresses significant volume changes in the FeF₃ cathode during cycling. Consequently, FeF₃@N-CNTs exhibits excellent rate capability and maintains a high discharge capacity of 110.6 mA h g⁻¹ after 5000 cycles at 2 A g⁻¹. It is believed that this study presents an innovative strategy for the development of long-cycling conversion-type cathode materials.

中文翻译：

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用于锂储存的 N 掺杂碳纳米管中的空间限制 FeF3 阴极


在此，通过原位热解和气相氟化策略开发了一种 N 掺杂碳纳米管封装的 FeF₃ 纳米颗粒 （FeF₃@N-CNTs） 复合材料。3D 碳约束支架增强了转化反应动力学，并有效抑制了循环过程中 FeF₃ 阴极的显着体积变化。因此，FeF₃@N-CNT 表现出优异的倍率能力，并在 2 A ^g-1 下循环 5000 次后保持 110.6 mA h ^g-1 的高放电容量。相信本研究为长循环转换型正极材料的开发提供了一种创新策略。