Structural and electrochemical properties of TiFe alloys synthesized by ball milling for hydrogen storage

Hosni, Bilel; Fenineche, N.; Elkedim, O.; Khaldi, Chokri; Lamloumi, J.

doi:10.1007/s10008-017-3718-9

Cited by 18 publications

(4 citation statements)

References 45 publications

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“…The maximum electrochemical discharge capacity achieved for these electrodes is higher than some hydrides such as Ti2Ni (66.7 mAh/g at C/10), 12 Ti2‐xZrxNi (102 mAh/g at C/10), 11 and TiFe (147 mAh/g at C/10) 31 and LaNi3.55 Mn0.4Al0.3Co0.75 (150 mAh/g at C/3) 10 …”

Section: Resultsmentioning

confidence: 93%

“…mAh/g at C/10), 12 Ti2-xZrxNi (102 mAh/g at C/10), 11 and TiFe (147 mAh/g at C/10) 31 and LaNi3.55 Mn0.4Al0.3Co0.75 (150 mAh/g at C/3). 10 Figure 10 shows the evolution of the maximum discharge capacity and that of the activation cycle number as a function of the substitution rate x (Figure 10a) and the discharge capacity retention of the SmxZn1-xFe2O4 electrodes (Figure 10b).…”

Section: Electrochemical Discharge Capacities Of Thementioning

confidence: 99%

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Structure and electrochemical hydrogen storage properties of spinel ferritesSm_xZn₁₋_xFe₂O₄alloys (x = 0,x = 0.2,x = 0.4, andx = 0.6) forNi‐MHaccumulator applications

Zayani

Azizi

Salah

et al. 2022

Env Prog and Sustain Energy

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Section: Resultsmentioning

confidence: 93%

Section: Electrochemical Discharge Capacities Of Thementioning

confidence: 99%

Structure and electrochemical hydrogen storage properties of spinel ferritesSm_xZn₁₋_xFe₂O₄alloys (x = 0,x = 0.2,x = 0.4, andx = 0.6) forNi‐MHaccumulator applications

Zayani

Azizi

Salah

et al. 2022

Env Prog and Sustain Energy

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“…Nevertheless, the peak electrochemical discharge capacity obtained for this compound is better than that of some hydrides such as Ti 2 Ni (66.7 mAh/g at C/10), 23 Ti 2‐x Zr x Ni (102 mAh/g at C/10) 24 of type AB 2 , and of the same order of magnitude as CeY 2 Ni 9 (143 mAh/g at C/10) 7 of type AB 3 , TiFe (147 mAh/g at C/10) of type AB, 25 and LaNi 3.55 Mn 0.4 Al 0.3 Co 0.75 (150 mAh/g at C/3) 6 of type AB 5 .…”

Section: Resultsmentioning

confidence: 96%

Electrochemical behavior of a spinel zinc ferrite alloy obtained by a simple sol‐gel route for Ni‐MH battery applications

Zayani

Azizi

El‐Nasser

et al. 2020

Intl J of Energy Research

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Summary The hydrogen storage properties of zinc ferrite spinel (ZnFe2O4) alloy were studied, in this work. This alloy, formed applying the sol‐gel technique, was employed as anode in Ni‐MH accumulators. X‐ray diffractogram analysis showed the appearance of the compound spinel with cubic structure. In fact, the crystallite size, specified by the TEM technique, was equal to 30 nm. The hydrogen storage properties of zinc ferrite spinel alloy were examined applying various electromechanical methods (chronopotentiometry, cyclic voltammetry, and chronoamperometry) at the C/10 rate and at room temperature. The maximum discharge capacity value was almost equal to 145 mAh/g. After 100 cycles, a good cycling stability was attained and correlation between the (DH/a2) ratio and the discharge capacity as noticed. The electrolyte/ZnFe2O4 anode interface prior to and following activation was studied utilizing electrochemical impedance spectroscopy.

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“…Therefore, in order to maintain the nanocrystalline structure of the Mg-Zn alloy, the BPR should not be increased further. Hosni et al [49] studied the TiFe alloying by mechanical alloying for different milling times (20, 30, 40, and 60 h) and ball/powder weight ratios (2:1, 5:1, and 8:1) in order to optimize the milling parameters. They showed that, by increasing the ball/powder weight ratio, the amorphization process accelerates and powders milled with a ratio of 1:8 have the highest TiFe conversion rate.…”

Section: Structural An Morphological Properties Of the Cani 47 Mn 03 Alloy Powdermentioning

confidence: 99%

Phase structure and electrochemical characteristics of CaNi4.7Mn0.3 hydrogen storage alloy by mechanical alloying

Dabaki

Khaldi

Elkedim

et al. 2021

J Solid State Electrochem

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In this paper, we study systematically the effect of ball/powder weight ratio on the morphological, structural, and electrochemical properties of CaNi 4.7 Mn 0.3 powder alloy by mechanical milling. The CaNi 4.7 Mn 0.3 alloy powder is elaborated for an optimal milling time of 40 h with 8:1 and 12:1 ball/powder weight ratios. The X-ray diffraction (XRD) characterization shows that the CaNi 4.7 Mn 0.3 alloy powder is characterized by a nanocrystalline/amorphous crystallographic state and exhibits two major Ni and CaNi 3 phases irrespective of the ball/powder weight ratio. The CaNi 4.7 Mn 0.3 electrode activates rapidly in the first cycle regardless of the ball/powder weight ratio, and the best value of maximum discharge capacity is obtained for an 8:1 ratio (125 mAh g −1 ). The values of diffusion coefficient/mean grain size squared ratio D H a 2 , Nernst's potential E 0 , and exchange current density I 0 at the first activation cycle are the best for 8:1 ball/powder weight ratio. After activation, the discharge capacity decreases exponentially regardless of the ball/powder weight ratio. Indeed, the capacity loss and the degradation rate after 50th cycle are about 71%, 10.71 cycle −1 and 53%, 2.95 cycle −1 for 8:1 and 12:1, respectively. The evolution of the D H a 2 ratio, E 0 , and I 0 during the cycling is in good agreement with that of the discharge capacity. The highest values of the diffusion coefficient D H , Nernst's potential E 0 , and exchange current density I 0 after 50th cycle are observed for 8:1 ball/powder weight ratio. KeywordsCaNi 4.7 Mn 0.3 hydrogen storage alloy • Mechanical alloying • Morphological and structural properties • Electrochemical properties

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Structural and electrochemical properties of TiFe alloys synthesized by ball milling for hydrogen storage

Cited by 18 publications

References 45 publications

Structure and electrochemical hydrogen storage properties of spinel ferritesSm_xZn₁₋_xFe₂O₄alloys (x = 0,x = 0.2,x = 0.4, andx = 0.6) forNi‐MHaccumulator applications

Structure and electrochemical hydrogen storage properties of spinel ferritesSm_xZn₁₋_xFe₂O₄alloys (x = 0,x = 0.2,x = 0.4, andx = 0.6) forNi‐MHaccumulator applications

Electrochemical behavior of a spinel zinc ferrite alloy obtained by a simple sol‐gel route for Ni‐MH battery applications

Phase structure and electrochemical characteristics of CaNi4.7Mn0.3 hydrogen storage alloy by mechanical alloying

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Structural and electrochemical properties of TiFe alloys synthesized by ball milling for hydrogen storage

Cited by 18 publications

References 45 publications

Structure and electrochemical hydrogen storage properties of spinel ferritesSmxZn1−xFe2O4alloys (x = 0,x = 0.2,x = 0.4, andx = 0.6) forNi‐MHaccumulator applications

Structure and electrochemical hydrogen storage properties of spinel ferritesSmxZn1−xFe2O4alloys (x = 0,x = 0.2,x = 0.4, andx = 0.6) forNi‐MHaccumulator applications

Electrochemical behavior of a spinel zinc ferrite alloy obtained by a simple sol‐gel route for Ni‐MH battery applications

Phase structure and electrochemical characteristics of CaNi4.7Mn0.3 hydrogen storage alloy by mechanical alloying

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Structure and electrochemical hydrogen storage properties of spinel ferritesSm_xZn₁₋_xFe₂O₄alloys (x = 0,x = 0.2,x = 0.4, andx = 0.6) forNi‐MHaccumulator applications

Structure and electrochemical hydrogen storage properties of spinel ferritesSm_xZn₁₋_xFe₂O₄alloys (x = 0,x = 0.2,x = 0.4, andx = 0.6) forNi‐MHaccumulator applications