Zhang Dan, Zhang Chunyan, Xu Huishi, Huo Zhe, Shi Xinyu, Liu Xiaodi, Liu Guangyin, Yu Chuang
College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China.
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Molecules. 2024 Feb 22;29(5):959. doi: 10.3390/molecules29050959.
Transition metal nitride negative electrode materials with a high capacity and electronic conduction are still troubled by the large volume change in the discharging procedure and the low lithium ion diffusion rate. Synthesizing the composite material of F-doped FeN and an N-doped porous carbon framework will overcome the foregoing troubles and effectuate a preeminent electrochemical performance. In this study, we created a simple route to obtain the composite of F-doped FeN nanoellipsoids and a 3D N-doped porous carbon framework under non-ammonia atmosphere conditions. Integrating the F-doped FeN nanoellipsoids with an N-doped porous carbon framework can immensely repress the problem of volume expansion but also substantially elevate the lithium ion diffusion rate. When utilized as a negative electrode for lithium-ion batteries, this composite bespeaks a stellar operational life and rate capability, releasing a tempting capacity of 574 mAh g after 550 cycles at 1.0 A g. The results of this study will profoundly promote the evolution and application of transition metal nitrides in batteries.
具有高容量和电子传导性的过渡金属氮化物负极材料，仍受放电过程中体积变化大以及锂离子扩散速率低的困扰。合成F掺杂的FeN与N掺杂的多孔碳骨架的复合材料，将克服上述问题并实现卓越的电化学性能。在本研究中，我们创造了一种简单的方法，在非氨气氛条件下获得F掺杂的FeN纳米椭球体与三维N掺杂多孔碳骨架的复合材料。将F掺杂的FeN纳米椭球体与N掺杂的多孔碳骨架相结合，不仅可以极大地抑制体积膨胀问题，还能大幅提高锂离子扩散速率。当用作锂离子电池的负极时，这种复合材料表现出出色的使用寿命和倍率性能，在1.0 A g下循环550次后释放出诱人的574 mAh g的容量。本研究结果将深刻推动过渡金属氮化物在电池中的发展和应用。
