Green and facile synthesis of carbon encapsulated Fe3N nanospheres grown on N-doped porous carbon nanosheet as an excellent anode material

• Published in: Journal of power sources 2023-09, Vol.579, p.233288, Article 233288
• Main Authors: Zhang, Dan, Zhang, Chunyan, Shi, Xinyu, Xu, Huishi, Shi, Shukui, Li, Yuzhu, Luo, Baomin, Liu, Guangyin, Liu, Xiaodi, Yu, Chuang, Li, Xin
• Format: Article
• Language: English
• Subjects: Anode; Iron nitride; Lithium-ion batteries; N-doped porous carbon nanosheet; Synthesis
• ISSN: 0378-7753
• DOI: 10.1016/j.jpowsour.2023.233288

The development of iron nitride anode materials is greatly impeded by their traditional synthetic methods. In this work, carbon encapsulated Fe3N nanospheres grown on N-doped porous carbon nanosheet is successfully prepared by a green, facile and controllable approach. Only a small nitrogen source is needed in the synthetic process by in-situ nitrogenization. The Fe3N nanospheres are coated by carbon and uniformly adhered to N-doped porous carbon nanosheet, which prominently mitigates the variation of volume and elevates the electrochemical reaction kinetics. The feature is conducive to realizing a long life and brilliant rate performance. As an anode for lithium-ion batteries, a high discharge capacity of 484 mA h g−1 is delivered after 600 cycles at 2 A g−1. Extensive impact is brought by this study for the preparation and application of metal nitride materials. [Display omitted] •Fe3N@C/NPCN composite is prepared by green, facile and controllable route.•Only a small nitrogen source is needed in the synthesis process.•Carbon encapsulated Fe3N nanoparticles are uniformly grown on NPCN.•High capacity of 484 mAh g−1 after 600 cycles is achieved at 2 A g−1.