Effect of rapid solidification on phase structure and hydrogen storage properties of Mg70(Ni0.75La0.25)30 alloy

Zhou, Huaiying; Lan, Xing-Xian; Wang, Zhong Min; Yao, Qing; Ni, Chengyuan; Liu, Wenping

doi:10.1016/j.ijhydene.2012.03.133

Cited by 29 publications

(4 citation statements)

References 48 publications

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“…Slow cooling leads to larger grains, potentially diminishing hydrogen diffusion rates throughout the material. Conversely, rapid solidification generally results in finer microstructures, enhancing the kinetics of hydrogen exchange during the formationdecomposition of hydrides [51].…”

Section: Synthesis Processesmentioning

confidence: 99%

Application of High-Entropy Alloys in Hydrogen Storage Technology

Karpov

2024

Problems of Atomic Science and Technology

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High-entropy alloys (HEAs), a new class of materials with promising structural and functional properties, have recently garnered significant attention in various fields, including hydrogen storage. Their unique design concept and vast compositional diversity offer unprecedented opportunities for the development of advanced hydrogen storage materials. This review aims to systematically analyze the current research status of high-entropy alloys for hydrogen storage, with a focus on compositional designs, synthesis processes, and hydrogen storage characteristics. The review also examines correlations between hydrogen storage performance and composition-related properties, particularly for hydrogen storage alloys crystallizing as BCC solid solutions and Laves phase structures. Various aspects of hydrogen interaction with HEAs, including reversibility of hydrogen storage, cycling stability, and activation behavior have been considered in detail. The potential of HEAs in the development of novel hydrogen storage materials with superior performance is highlighted, emphasizing the importance of effective compositional design and synthesis methods.

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Section: Synthesis Processesmentioning

confidence: 99%

Application of High-Entropy Alloys in Hydrogen Storage Technology

Karpov

2024

Problems of Atomic Science and Technology

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“…With increasing La content, intermediate phases including Mg 17 La 2 [16,39], LaNi 2.28 [40,41] and La 2 Ni 3 [42] can be detected in the alloys with x = 0.1, 0.3 and 0.5, respectively. These newly formed intermediate phases can also be hydrogenated [41].…”

Section: Microstructure Evolutionmentioning

confidence: 99%

“…One is to change the chemical compositions of alloys [14][15][16][17] aiming at designing alloys based on the thermodynamic aspect and the thermodynamic destabilization is expected to be achieved by alloying with other elements. A similar way to improve the thermodynamic stability of Li-N-H system has also been successfully attempted.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and electrochemical hydrogenation/dehydrogenation performance of melt-spun La-doped Mg2Ni alloys

Hou

Zhang

et al. 2015

Materials Characterization

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“…Similar results have been reported in Mg-Ni-RE alloys with excellent glass forming ability. [22][23][24] The XRD patterns for the hydrogenated Mg 60 Ni 30 La 102x Co x (A, B and C) sample under a hydrogen pressure of 2 MPa at 573 K are shown in Fig. 2.…”

Section: Structural Characterisationmentioning

confidence: 99%

Effect of Co substitution for La on hydrogen storage properties and thermal stabilities of amorphous Mg₆₀Ni₃₀La_10−xCo_x (x = 0, 2 and 4) alloys prepared by melt spinning

Wang

Zhou

et al. 2014

Materials Science and Technology

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A comparison of the hydrogen storage properties and thermal properties of amorphous Mg60Ni30La10−xCox hydrogen storage alloys prepared by melt spinning has been investigated. A, B and C were used to represent each alloy composition when x = 0, 2 and 4 respectively. Their microstructures, the hydrogen storage properties and the thermal stabilities were analysed by X-ray diffraction (XRD), PCTPro2000 and differential scanning calorimetry (DSC) respectively. After hydrogenation of Mg60Ni30La10−xCox (A, B and C) samples at 573 K under 2 MPa hydrogen pressure, XRD pattern results indicate the formation of new phases of MgH2 (A, B, C), Mg2NiH4 (A, B, C), La4H12·19 (A, B, C), Mg2Ni0·9Co0·1H4 (B), Mg2NiH0·26 (C) and Mg2CoH2 (C). It is observed that the experimental data of hydrogen desorption kinetics at 523, 573 and 623 K are well fitted through Avrami–Erofeev equation, and the hydrogen desorption kinetics is in the order of C>B>A. In addition, with increasing Co content, alloy C has the maximum hydrogen absorption capacity of 3·05 wt- and the maximum hydrogen desorption capacity of 2·85 wt-. Based on the results of DSC analysis, dehydrogenation activation energies of these alloys are determined to be 98·31±2·82 kJ mol−1 (A), 96·33±5·61 kJ mol−1 (B) and 78·99±2·98 kJ mol−1 (C), which are in accordance with the results of hydrogen desorption kinetics.

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Effect of rapid solidification on phase structure and hydrogen storage properties of Mg70(Ni0.75La0.25)30 alloy

Cited by 29 publications

References 48 publications

Application of High-Entropy Alloys in Hydrogen Storage Technology

Application of High-Entropy Alloys in Hydrogen Storage Technology

Microstructure and electrochemical hydrogenation/dehydrogenation performance of melt-spun La-doped Mg2Ni alloys

Effect of Co substitution for La on hydrogen storage properties and thermal stabilities of amorphous Mg₆₀Ni₃₀La_10−xCo_x (x = 0, 2 and 4) alloys prepared by melt spinning

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Effect of rapid solidification on phase structure and hydrogen storage properties of Mg70(Ni0.75La0.25)30 alloy

Cited by 29 publications

References 48 publications

Application of High-Entropy Alloys in Hydrogen Storage Technology

Application of High-Entropy Alloys in Hydrogen Storage Technology

Microstructure and electrochemical hydrogenation/dehydrogenation performance of melt-spun La-doped Mg2Ni alloys

Effect of Co substitution for La on hydrogen storage properties and thermal stabilities of amorphous Mg60Ni30La10−xCox (x = 0, 2 and 4) alloys prepared by melt spinning

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Effect of Co substitution for La on hydrogen storage properties and thermal stabilities of amorphous Mg₆₀Ni₃₀La_10−xCo_x (x = 0, 2 and 4) alloys prepared by melt spinning