2013年9月15日 · The crystal structure of as-prepared FeF 3 ·3H 2 O, FeF 3 ·0.33H 2 O, and FeF 3 has been examined by X-ray diffraction method (XRD). From the XRD patterns and their Rietveld refinements (Fig. 2a, d and g), the three fluoride phases look quite pure. The detailed refinement parameters of these materials are listed in Table 1.

2023年4月1日 · To reveal the structural advantages and simultaneously determine the possible morphology and phase transitions of the FeF 3 /Fe/GC cathode during cycling, ex-situ TEM and XRD studies were performed.

2022年10月7日 · The FeF 3 electrode exhibits a reversible capacity of 579 mAh g −1 at the initial cycle and retains a discharge capacity of 461 mAh g −1 at the 10th cycle. The XRD and XAS results suggest that the FeF 3 is first reduced to FeF 2 during discharging, and then to Fe. The reverse reaction occurs during charging.

Here, we study for the first time the influence of alumina and titania (Al2O3 and TiO2) ALD coatings on conversion FeF3 cathodes in SIBs. Post-mortem analysis revealed that active material in...

2018年6月13日 · The crystal structures of FeOF and Fe 0.9 Co 0.1 OF were examined using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution...

Powder X-ray diffraction, Raman spectroscopy, and scanning electron microscopy confirmed the formation of both FeF3·0.33 H2O and MWCNT-FeF3·0.33 H2O composites, with well-distributed...

2017年2月7日 · The in-situ XRD results reveal that lithium insertion into the composite results in poor crystallinity of the material. The XANES study shows that Fe valence systematically changes from 3+ to 2...

2015年4月22日 · A sheet-like structure FeF3/graphene composite is successfully synthesized by a novel and facile sol–gel method. The structure and electrochemical performance of the as-synthesized FeF3/graphene composite are investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microsco

2014年1月16日 · To address the second question, we performed an in situ XRD study on the structural changes during the first discharge of nanostructured FeF 3, and we offer a simple mechanism for lithiation between the compositions FeF 3 and LiFeF 3.

2019年2月1日 · Electrochemical tests demonstrate that the well designed FeF 3 ·0.33H 2 O single crystal (FFH-S) delivers 30 mAh g −1 higher capacity (172 mAh g −1 at 0.1C) than the common FeF 3 ·0.33H 2 O polycrystal (FFH-P). In-situ XRD combined with theoretic calculation elucidate the difference in lithium storage capacity.