Relationship between the Crystallographic Structure of Electrodeposited Fe-P Alloy Film and its Thermal Equilibrium Phase Diagram

Wang, Feng; Itoh, K.; Watanabe, Tohru

doi:10.2320/matertrans.44.127

Cited by 24 publications

(15 citation statements)

References 25 publications

(20 reference statements)

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“…This finding demonstrates that both crystalline and amorphous phases of FeP 2 were present in the Sb 18 Fe 58 P 24 composite due to the high P content (24 at. %), as confirmed by the EDX results, which is consistent with the findings of Wang et al . Transmission electron microscopy (TEM) was utilized to further investigate the crystal structure of the Sb−Fe−P composite.…”

Section: Resultssupporting

confidence: 88%

Electrodeposited Binder‐Free Antimony−Iron−Phosphorous Composites as Advanced Anodes for Sodium‐Ion Batteries

et al. 2019

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The limited availability and rising cost of lithium have motivated research into sodium as an alternative ion for rechargeable batteries. However, anode development for such sodium-ion batteries (SIBs) has advanced slowly. Herein, novel binder-free ternary SbÀ FeÀ P composites were synthesized through a controllable electrodeposition method and were examined as prospective anode materials for sodium-ion batteries (SIBs). The Sb 47 Fe 39 P 14 electrode exhibited a high desodiation capacity of 431.4 mA h g À 1 at 100 mA g À 1 with a capacity retention of 97.8% during the 200 th cycle. Further, this anode delivered a high rate capacity (245.8 mA h g À 1 at 2000 mA g À 1 ). The promising Na-ion storage, cycle and rate performance of the Sb 47 Fe 39 P 14 electrode are mainly ascribed to the synergistic effect of its microstructure and active/inactive metal matrix. A kinetics investigation revealed that the rate capability of the Sb 47 Fe 39 P 14 electrode can be attributed to the combination of primary pseudocapacitive and secondary solid-state diffusion contributions. The results of this study should enable the development of a controllable, scalable electrodeposition strategy and help explore other metallic composites with excellent lifespans and high rate capabilities for practical SIB applications.

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Section: Resultssupporting

confidence: 88%

Electrodeposited Binder‐Free Antimony−Iron−Phosphorous Composites as Advanced Anodes for Sodium‐Ion Batteries

et al. 2019

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“…For Fe58Sn30P12, the peak of SnP was not observed, and the intensities of the Fe3Sn and Sn peaks were weaker than those of Fe51Sn38P11. When the current density was increased to 26.5-44.25 A dm -2 , a broad peak was observed at 40-45°, indicating that the Fe-Sn-P alloys deposited under these conditions were amorphous due to their high P content (as determined by EDX) [24,25]. Besides, a very weak peak of Fe3Sn was observed at 2θ = 43.2°…”

Section: Resultsmentioning

confidence: 96%

Superior Li storage anode based on novel Fe-Sn-P alloy prepared by electroplating

Zheng

Zhang

Wang

et al. 2017

Electrochimica Acta

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Novel ternary Fe-Sn-P alloys prepared by simple single-step electrodeposition are investigated as promising anodes for Li-ion batteries. The Fe 51 Sn 38 P 11 electrode, in particular, shows outstanding Li-storage properties, with initial specific discharge/charge capacities of 857.8 and 655 mA h g ¿1 , respectively. The reversible capacity remains stable at 427 mA h g ¿1 , even after 90 cycles, corresponding to a coulombic efficiency of 96% and a capacity retention of 65%. The cauliflower-like morphology of the above anode is well preserved after 90 cycles, suggesting that this alloy could significantly mitigate the electrode volume expansion by exerting a positive multiphase synergistic effect. The superior electrochemical performance of the ternary Fe-Sn-P alloys confirmed its potential as an alternative Li-ion storage anode; the large-scale suitability of the developed electroplating method provides an additional advantage.

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“…However, it is hard to distinguish solely by XRD measurements between a totally amorphous structure and a partially crystalline structure formed by the aggregation of crystals at the nanoscale. The presence of such nano-crystals would in fact as well cause a broad diffraction peak [49]. The Fe-W sample with 24 at.% W was analyzed with TEM to confirm the amorphous nature deduced from the XRD results.…”

Section: Characterization Of As-plated Fe-w Coatings: Surface Morpholmentioning

confidence: 99%

“…The higher thermal stability can be related to the lower rate of elemental diffusion obtained when adding a higher melting point element in the alloy, like in the case of W addition [3]. Heat treatment results can also be used to distinguish between a homogenous amorphous phase from a mixed amorphous crystalline phase [49]. Thus, the different recrystallization process observed for the three annealed samples can help to define if the crystallographic state of the as-deposited sample with 16 at.% W is indeed not fully amorphous.…”

Section: Characterization Of Annealed Coatingsmentioning

confidence: 99%

In-depth characterization of as-deposited and annealed Fe-W coatings electrodeposited from glycolate-citrate plating bath

Mulone

Nicolenco

Hoffmann

et al. 2018

Electrochimica Acta

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FeW coatings with 4, 16 and 24 at.% of W were electrodeposited under galvanostatic conditions from a new environmental friendly Fe(III)-based glycolate-citrate bath. This work aims to find correlations between composition including the light elements, internal structure of the electrodeposited Fe-Walloys and functional properties of material. The obtained alloys were characterized by Glow Discharge Optical Emission Spectrometry (GD-OES), Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS), Transmission Electron Microscopy (TEM), and X-ray Diffraction (XRD). Compositional depth profiles of 10 mm thick coatings obtained by GD-OES show that the distribution of metals is uniform along the entire film thickness, while SEM imaging depicted the presence of cracks and O-and W-rich areas inside the Fe-Wcoating with 4 at.% W. In the samples with 16 and 24 at.% of W, oxygen and hydrogen are present mostly at the surface about 1 mm from the top while traces of carbon are distributed within the entire coatings. With increasing W content, the structure of the coatings changes from nanocrystalline to amorphous which was shown by XRD and TEM analysis. Also, the surface of coatings becomes smoother and brighter, that was explained based on the local adsorption of intermediates containing iron and tungsten species. Annealing experiments coupled with XRD analysis show that the thermal stability of FeW alloys increases when the W content increases, i.e. the coating with 24 at.% W retains the amorphous structure up to 600 _C, where a partially recrystallized structure was observed. Upon recrystallization of the amorphous samples the following crystalline phases are formed: a-Fe, Fe2W, Fe3W3C, Fe6W6C, and FeWO4. Hence, the FeW coatings with higher W content (>25 at.%) can be considered as suitable material for high temperature applications. Fig. 4. Compositional depth profiles as obtained by GD-OES of FeW samples of different composition: 4 at.% of W (a), 16 at.% of W (b) and 25 at.% of W(c).

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Relationship between the Crystallographic Structure of Electrodeposited Fe-P Alloy Film and its Thermal Equilibrium Phase Diagram

Cited by 24 publications

References 25 publications

Electrodeposited Binder‐Free Antimony−Iron−Phosphorous Composites as Advanced Anodes for Sodium‐Ion Batteries

Electrodeposited Binder‐Free Antimony−Iron−Phosphorous Composites as Advanced Anodes for Sodium‐Ion Batteries

Superior Li storage anode based on novel Fe-Sn-P alloy prepared by electroplating

In-depth characterization of as-deposited and annealed Fe-W coatings electrodeposited from glycolate-citrate plating bath

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