2020年11月5日 · FeF 2 nanoparticles embedded with graphitic carbon were successfully synthesized using Fe-MIL-88B. The FeF 2 @GC electrode shows improved discharge capacity, stable retention, and high rate performance in SIBs. The phase transformation of FeF 2 to FeF 3 during cycles is an essential factor for the high electrochemical performance.

2024年2月1日 · Thermogravimetry analysis (TGA, STA-449-F3) was tested under an air atmosphere with a heating rate of 10 °C/min and a temperature range from 50 to 800 °C. The ultraviolet–visible–near infrared (UV–Vis–NIR) absorption spectra of all samples were measured on a UV–Vis–NIR spectrophotometer (Lambda 750, PerkinElmer).

2022年5月14日 · Advanced electron microscopy reveals that the in situ formation of stable Fe 3 O 4 layers on the surface of FeF 2 prevents the electrolyte decomposition and leaching of iron (Fe), thus enhancing the cyclability.

通过将纳米fef2嵌入到聚合物衍生碳基体（pdc）中，形成具有稳定离子电导和电子电导的fef2@pdc复合材料，实现了前所未有的超长循环寿命以及高倍率性能。

Thermogravimetric analysis (TGA) of HTB-FeF2.2(OH)0.8 · (H2O)0.33 performed under He up to 350°C. The end product was analyzed by XRD and Mössbauer spectroscopy (Fig. 9).

2022年4月15日 · Iron difluoride (FeF 2) is considered as a promising conversion-typed cathode material in SIBs because of its low-cost and high theoretical capacity of 571 mAh g −1. Additionally, storing larger sodium ions is more suitable in conversion type cathode when compared to other insertion-typed cathodes in SIBs.

2024年9月29日 · Figure 2G shows the thermogravimetric analysis (TGA) profiles of bare FeF 2 (a) and FeF 2 @CNTs (b), which suggest a weight loss of 3.1 wt.% for bare FeF 2 between 20°C and 200°C, mainly attributed to surface water evaporation.

We combine powder neutron diffraction, magnetometry and ⁵⁷ Fe Mössbauer spectrometry to determine the nuclear and magnetic structures of a strongly interacting weberite-type inorganic–organic...

2022年10月28日 · In this work, we report a simple synthesis to produce crystalline FeF 2 particles approximately 35 nm in diameter surrounded by a thin carbon shell (FeF 2 @C) and demonstrate its excellent performance as a cathode in Li metal batteries.

结果表明，裸漏的FeF2电极循环性能随着电解液负载量的降低，性能显著降低，在贫电解液（5uL/mg）条件下，几乎没有，30圈后，几乎没有容量，而FeF2-cPAN电极即使在贫电解液循环150圈，容量依然保持320mAh/g。