Effect of Ni substitution on hydrogen storage properties of Zr0.8Ti0.2Co1−xNix (x = 0, 0.1, 0.2, 0.3) alloys

Wan, Jing; Li, Rongfeng; Wang, Feng; Ding, Cuiping; Yu, Ronghai; Wu, Ying

doi:10.1016/j.ijhydene.2016.03.112

Cited by 33 publications

(6 citation statements)

References 31 publications

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“…Moreover, the ZrCo phase diagram and EDX analysis were used to ensure the accuracy of the results. The ZrCo reaction can easily form ZrCo 2 , Zr 6 Co 23 , and Zr 2 Co 11 phases below approximately 1800 K when the Co content is higher than 65 at%, 40,41 consistent with previous reports 15,19,24 . As shown in Figure 3E, the composition of the ZrV 0.24 Co 1.76 phase was confirmed by combining XRD and EDX spectroscopy.…”

Section: Resultssupporting

confidence: 89%

“…Notably, the growing cracks are beneficial to increase the diffusion channel of hydrogen atoms and enlarge the contact area between the hydrogen atom and hydrogen storage site, thus improving the hydriding kinetics after full activation 24 . As shown in Figure 4A, the improvement in the kinetics of ZrCo is related to the formation of cracks.…”

Section: Resultsmentioning

confidence: 97%

“…14 Regarding the antidisproportionation, Fe and Ni substitution for Co enhances the durability against hydrogen-induced disproportionation 8,23 and provides an outstanding cyclic stability. 24 The Ti, Hf substitution for Zr could effectively restrain the disproportionation of ZrCo according to firstprinciple calculations and theoretical experiments. 9,[25][26][27][28][29] In addition, element doping alters the microstructure inside the crystal including cell expansion/contraction, lattice distortion, and atom occupancy.…”

Section: Introductionmentioning

confidence: 99%

“…The hydrogenation at 100°C under 0.8‐bar H 2 and dehydrogenation at 500°C under vacuum are recommended for an efficient and fast activation of ZrCo 14 . Regarding the antidisproportionation, Fe and Ni substitution for Co enhances the durability against hydrogen‐induced disproportionation 8,23 and provides an outstanding cyclic stability 24 . The Ti, Hf substitution for Zr could effectively restrain the disproportionation of ZrCo according to first‐principle calculations and theoretical experiments 9,25‐29 …”

Section: Introductionmentioning

confidence: 99%

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Effects of V doping on microstructure, kinetic, and thermodynamic characteristics of Zr _{50‐
x} V _x Co ₅₀ ( x = 0, 2.5, 3.5, and 5.0) hydrogen storage alloys

Liang

Wang

et al. 2022

Intl J of Energy Research

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Summary To improve the kinetic properties of the ZrCo alloy, Zr50‐xVxCo50 (x = 0, 2.5, 3.5, and 5.0) samples were fabricated by vacuum arc‐melting. The effects of the V substitution on the microstructure, hydrogen absorption/desorption kinetics, cycling stability, and antidisproportionation properties of ZrCo were systematically investigated. X‐ray diffraction results show that the Zr50‐xVxCo50 (x = 2.5, 3.5, and 5.0) alloys consisted of ZrCo phase and ZrV0.24Co1.76 second phase. The lattice parameter and cell volume gradually decreased with the increase in the V content. The initial activation behavior was improved for the Zr50‐xVxCo50 (x = 2.5, 3.5, and 5.0) samples because of the catalytic effect of the ZrV0.24Co1.76 second phase. Additionally, the equilibrium pressure of hydrogen absorption increased and the plateau width decreased with the increase in the V content. To obtain thermodynamic and kinetic data, ΔH and Ea were calculated using the Van't Hoff equation and Kissinger equation. ΔH of the Zr50‐xVxCo50 (x = 0, 2.5, 3.5, and 5.0)‐H system was reduced from 90.12 to 72.52 kJ·mol−1, while Ea of ZrCoH3 decreased from 113.38 ± 4.2 to 94.13 ± 2.9 kJ·mol−1 for hydrogen desorption, which is beneficial for the hydrogenation/dehydrogenation reaction. Furthermore, the cycling stability and antidisproportionation properties were enhanced after the V addition, particularly for the Zr47.5V2.5Co50 alloy exhibiting an excellent initial activation behavior.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of V doping on microstructure, kinetic, and thermodynamic characteristics of Zr _{50‐
x} V _x Co ₅₀ ( x = 0, 2.5, 3.5, and 5.0) hydrogen storage alloys

Liang

Wang

et al. 2022

Intl J of Energy Research

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“…Recently, many investigations mainly focused on element substitution have been made to improve the antidisproportionation property of ZrCo, which achieved remarkable progress [ 20 – 24 ]. Compared with other elements, Ti has been surprisingly found to be the most effective substitution element for improving the antidisproportionation property so far.…”

Section: Introductionmentioning

confidence: 99%

Structural and Kinetic Hydrogen Sorption Properties of Zr_0.8Ti_0.2Co Alloy Prepared by Ball Milling

Kou

Luo

et al. 2018

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The effects of ball milling on the hydrogen sorption kinetics and microstructure of Zr0.8Ti0.2Co have been systematically studied. Kinetic measurements show that the hydrogenation rate and amount of Zr0.8Ti0.2Co decrease with increasing the ball milling time. However, the dehydrogenation rate accelerates as the ball milling time increases. Meanwhile, the disproportionation of Zr0.8Ti0.2Co speeds up after ball milling and the disproportionation kinetics is clearly inclined to be linear with time at 500°C. It is found from X-ray powder diffraction (XRD) results that the lattice parameter of Zr0.8Ti0.2Co gradually decreases from 3.164 Å to 3.153 Å when the ball milling time extends from 0 h to 8 h, which is mainly responsible for the hydrogen absorption/desorption behaviors. In addition, scanning electron microscope (SEM) images demonstrate that the morphology of Zr0.8Ti0.2Co has obviously changed after ball milling, which is closely related to the hydrogen absorption kinetics. Besides, high-resolution transmission electron microscopy (HRTEM) images show that a large number of disordered microstructures including amorphous regions and defects exist after ball milling, which also play an important role in hydrogen sorption performances. This work will provide some insights into the principles of how to further improve the hydrogen sorption kinetics and disproportionation property of Zr0.8Ti0.2Co.

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Recent Progress in Functional Nanomaterials towards the Storage, Separation, and Removal of Tritium

et al. 2023

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Tritium is a sustainable next‐generation prime fuel for generating nuclear energy through fusion reactions to fulfill the increasing global energy demand. Owing to the scarcity–high demand tradeoff, tritium must be bred inside a fusion reactor to ensure sustainability and must therefore be separated from its isotopes (protium and deuterium) in pure form, stored safely, and supplied on demand. Existing multistage isotope separation technologies exhibit low separation efficiency and require intensive energy inputs and large capital investments. Furthermore, tritium‐contaminated heavy water constitutes a major fraction of nuclear waste, and accidents like the one at Fukushima Daiichi leave behind thousands of tons of diluted tritiated water, whose removal is beneficial from an environmental point of view. In this review, we discuss the recent progress and main research trends in hydrogen isotope storage and separation by focusing on the use of metal hydride (e.g., intermetallic, and high‐entropy alloys), porous (e.g., zeolites and metal organic frameworks (MOFs)), and 2‐D layered (e.g., graphene, hexagonal boron nitride (h‐BN), and MXenes) materials to separate and store tritium based on their diverse functionalities. Finally, the challenges and future directions for implementing tritium storage and separation are summarized in the reviewed materials.This article is protected by copyright. All rights reserved

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Effect of Ni substitution on hydrogen storage properties of Zr0.8Ti0.2Co1−xNix (x = 0, 0.1, 0.2, 0.3) alloys

Cited by 33 publications

References 31 publications

Effects of V doping on microstructure, kinetic, and thermodynamic characteristics of Zr _{50‐
x} V _x Co ₅₀ ( x = 0, 2.5, 3.5, and 5.0) hydrogen storage alloys

Effects of V doping on microstructure, kinetic, and thermodynamic characteristics of Zr _{50‐
x} V _x Co ₅₀ ( x = 0, 2.5, 3.5, and 5.0) hydrogen storage alloys

Structural and Kinetic Hydrogen Sorption Properties of Zr_0.8Ti_0.2Co Alloy Prepared by Ball Milling

Recent Progress in Functional Nanomaterials towards the Storage, Separation, and Removal of Tritium

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Effect of Ni substitution on hydrogen storage properties of Zr0.8Ti0.2Co1−xNix (x = 0, 0.1, 0.2, 0.3) alloys

Cited by 33 publications

References 31 publications

Effects of V doping on microstructure, kinetic, and thermodynamic characteristics of Zr 50‐ x V x Co 50 ( x = 0, 2.5, 3.5, and 5.0) hydrogen storage alloys

Effects of V doping on microstructure, kinetic, and thermodynamic characteristics of Zr 50‐ x V x Co 50 ( x = 0, 2.5, 3.5, and 5.0) hydrogen storage alloys

Structural and Kinetic Hydrogen Sorption Properties of Zr0.8Ti0.2Co Alloy Prepared by Ball Milling

Recent Progress in Functional Nanomaterials towards the Storage, Separation, and Removal of Tritium

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Effects of V doping on microstructure, kinetic, and thermodynamic characteristics of Zr _{50‐
x} V _x Co ₅₀ ( x = 0, 2.5, 3.5, and 5.0) hydrogen storage alloys

Effects of V doping on microstructure, kinetic, and thermodynamic characteristics of Zr _{50‐
x} V _x Co ₅₀ ( x = 0, 2.5, 3.5, and 5.0) hydrogen storage alloys

Structural and Kinetic Hydrogen Sorption Properties of Zr_0.8Ti_0.2Co Alloy Prepared by Ball Milling