Microstructure and first hydrogenation properties of TiFe alloy with Zr and Mn as additives

Patel, Abhishek Kumar; Duguay, Alexandre; Tougas, Bernard; Schade, Chris; Sharma, Pratibha; Huot, Jacques

doi:10.1016/j.ijhydene.2019.10.239

Cited by 58 publications

(9 citation statements)

References 46 publications

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“…[191] By increasing the content of Mn and Zr, the equilibrium pressure is lowered, while activation, kinetics and resistance to air are improved. [192,193] In contrast, capacity is reduced, because only the monohydride can be formed by Zr substitution. [194] The introduction of both V and Mn results in lower plateaus pressures, decreased hysteresis, flatter plateaus, good activation and capacity, showing a synergic effect of both Mn and V. [123] The effect of the double substitution in Fe-rich alloys (detailed composition reported in Table 4) was explored by Mitrokhin et al evidencing the formation of a secondary C14 Laves phase.…”

Section: P-block Elements (Al Si Sn)mentioning

confidence: 99%

Substitutional effects in TiFe for hydrogen storage: a comprehensive review

et al. 2021

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Section: P-block Elements (Al Si Sn)mentioning

confidence: 99%

Substitutional effects in TiFe for hydrogen storage: a comprehensive review

et al. 2021

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“…As another class of solid-state materials for H 2 storage, AB 2 -type alloys (such as TiMn 2 alloys) − have been widely studied for their cheap price, relatively high weight storage capacity (∼2.0 wt %), and fast hydrogen absorption and desorption rates at room temperature. Unfortunately, the poor activation behavior and element segregation hinder their practical application.…”

Section: Introductionmentioning

confidence: 99%

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Zhou

et al. 2022

Energy Fuels

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Hydrogen storage is one of the key steps that restricts the large-scale application of hydrogen energy and fuel cells. In this work, we developed an efficient H2 storage material by Ce doping in the TiZrCrMn alloy and systemically studied the effect of Ce on the microstructure, activation, and hydrogen storage properties. The results indicated that Ce addition in the Ti0.8Zr0.2Cr0.75Mn1.25 alloy did not change the major phase structure of Laves C14 but slightly increased the lattice constants and resulted in the formation of a CeO2 phase. It is interesting to find that Ce inhibited the enrichment of the Ti phase, inducing a homogeneous elemental distribution throughout the alloy. Hydrogenation and dehydrogenation tests indicated that the Ce-added alloy exhibited H2 absorption and effective desorption capacities of up to 1.98 and 1.79 wt %, respectively, higher than those of TiZrCrMn alloys reported in the literature. Ce also improved the activation of the alloy at room temperature and enhanced the cyclic performance during the hydrogenation and dehydrogenation. The activation energy, enthalpy change, and entropy change of the alloys upon hydrogenation and dehydrogenation were calculated and a small change was observed after Ce addition.

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“…Thus, the existence of the FeTi 2 phase at ambient temperature in the pure FeTi is most likely the result of the fast cooling of the melt after the arc melting procedure. As Patel et al reported, the addition of Zr or Mn can also induce the formation of the FeTi 2 phase 34 . The formation of the Fe 0.2 Ti 0.8 phase occurs when the starting material is 40 at.% of Fe and 60 at.% of Ti 35 , which is also similar to the case of 316L-Gr2 FeTi.…”

Section: Resultsmentioning

confidence: 88%

Developing sustainable FeTi alloys for hydrogen storage by recycling

et al. 2022

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Intermetallic alloys such as FeTi have attracted ever-growing attention as a safe and efficient hydrogen storage medium. However, the utilization of high-purity metals for the synthesis of such materials poses considerable concerns over the environmental sustainability of their large-scale production. Here, we report an approach for synthesizing FeTi from industrial scraps of iron (steels C45 and 316 L) and titanium (Ti alloy Grade 2) to reduce the carbon footprint associated with FeTi alloy synthesis, without compromising their hydrogen storage properties. At 50 °C and a pressure of 0 to 100 bar, the alloys obtained by using C45-Ti Grade 2 and 316L-Ti Grade 2 can absorb a maximum amount of hydrogen of 1.61 wt.% and 1.50 wt.%, respectively. Moreover, depending on the type of steel utilized, the thermodynamic properties can be modified. Our findings pave a pathway for developing high-performance, environmentally-sustainable FeTi alloys for hydrogen storage purposes using industrial metal wastes.

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Microstructure and first hydrogenation properties of TiFe alloy with Zr and Mn as additives

Cited by 58 publications

References 46 publications

Substitutional effects in TiFe for hydrogen storage: a comprehensive review

Substitutional effects in TiFe for hydrogen storage: a comprehensive review

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Developing sustainable FeTi alloys for hydrogen storage by recycling

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