energy storage alloy powder

Reversible Metal Hydride Thermal Energy Storage for High …

Phase 1: Proof of concept of HT-hydride for TES. • Metal Hydride exceeds ARPA-E targets. Phase 2: Design, build, demo TES system. • Demonstrate efficiencies and cycle life of full system. Phase 3: Integrate TES system with end application. • On-sun testing for high-T power generation. Phase 1 funded by ARPA-E HEATS.

[Retracted] Preparation of Mg2Ni Hydrogen Storage Alloy …

In this paper, Mg 2 Ni hydrogen storage alloy powder was prepared by high-energy ball milling mechanical alloying method, and the influence of stirring shaft rotation speed, ball milling time, and different sizes of ball mills on the formation time, powder morphology, and crystal structure of Mg 2 Ni alloy during ball milling was …

Development of phase change materials using hydrolyzed

In recent years, Al-Si alloys have been considered as promising high-temperature phase change materials (PCMs) for thermal energy storage because of their high heat storage capacity, suitable phase change temperature range, excellent heat conduction property, and great reusable performance [23], [24], [25].

Hydrogen storage properties in rapidly solidified TiZrVCrNi high ...

The development of alloys with substantial hydrogen storage capacities is a potential solution to the demand for hydrogen storage in a future hydrogen-based energy system. The synthesis, structural-microstructural properties, and hydrogen storage performance of a multicomponent TiZrVCrNi high-entropy melt-spun ribbon have been …

International Journal of Hydrogen Energy

Abstract. The rare earth hydrogen storage alloy was coated with the same contents of carbon particles using sucrose, glucose, pitch, and chitosan as carbon sources, and compared with the samples of uncoated and mechanically mixed with the carbon powder. The results show that the maximum discharge capacity (C max ), high-rate …

Decay in the hydrogen storage capacity of a LaNi4.7Al0.3 alloy powder ...

The hydrogen storage capacity of an air-exposed LaNi 4.7 Al 0.3 alloy powder was investigated using hydrogen absorption/desorption experiments. The LaNi 4.7 Al 0.3 alloy powder was first exposed in air for up to 90 days producing an oxidized surface layer which was about 50 nm in depth of the grain particle surface. The hydrogen …

High-performance La–Mg–Ni-based alloys prepared with low cost …

In order to improve the cycling stability, low cost YFe0.85 master alloy was used as raw material to prepare La–Mg–Ni-based La0.8-x Y x Mg 0.2 Ni 3-0.85x Fe 0.85x ( x = 0.50, 0.55, 0.60) hydrogen storage alloys by powder sintering method. The alloys were mainly composed of PuNi3 phase and MgCu 4 Sn phase. With the increase of Y and Fe, …

Review and outlook on high-entropy alloys for hydrogen storage

Recently, a new class of alloys, namely, high-entropy alloys (HEAs), started to be investigated for hydrogen storage as they can form metal hydrides. Considering that the properties of metal hydrides are greatly influenced by the type of phase formed, and chemical composition, HEAs (with their vastness of compositions) present a …

Developing a novel high-strength Mg-Gd-Y-Zn-Mn alloy for laser powder …

1. Introduction. As the lightest engineering metal material, magnesium (Mg) alloy is known as "the green engineering material of the 21st century", which has broad application prospects in automobile, rail transportation, aerospace, defense and military equipment [1, 2].The development of high strength and ductility Mg alloys is of great …

High-temperature ball milling: An efficient method to fabricate Ti …

The modified Ti and its alloys powder used for AM needed to meet two requirements: (a) Ф was over 16.7 % and less than 51.5 %, and (b) the total number of collisions was less than 1.2 × 10 7. This may provide effective guidance for the preparation of Ti and its alloys powder in the field of AM. CRediT authorship contribution statement

Research progress of hydrogen energy and metal hydrogen storage ...

TiFe alloy is a typical representative of AB type hydrogen storage alloy, and it is also the content to be discussed next. The theoretical hydrogen absorption capacity of TiFe alloy is 1.86 wt%, and the process of hydrogen storage and dissociation can be carried out at room temperature, and the equilibrium hydrogen pressure is about 0.3 MPa …

Design and mechanosynthesis of Low-Weight High-Entropy Alloys with hydrogen storage …

The MgAlTiCrNi LWHEAs powders have the lowest hydrogen storage capacity; this behavior has been observed in other HEAs with chromium [29]. However, the desorption isotherms do not show a 100% hydrogen release, the alloys maintain 0.06, 0.10 and 0.04 % wt. H 2 after hydrogen discharge, respectively.

Direct electrolytic preparation of cerium/nickel hydrogen storage alloy ...

The hydrogen storage alloy CeNi 5 can be prepared by direct electrochemical reduction of sintered pellets of mixed CeO 2 /NiO powders in a CaCl 2 /NaCl melt at a voltage of 2.5 V or higher at 820 °C. The product from the electrolysis was in the form of porous pellets and could be manually ground into CeNi 5 alloy powder.

Just shake or stir. About the simplest solution for the activation …

Introduction. The solid-state hydrogen storage method is considered to be an excellent way of safely storing this gas [[1], [2], [3], [4]].Metal hydrides are known as good candidates for solid-state hydrogen storage due to their sufficiently high gravimetric hydrogen capacity, extraordinarily high volumetric capacity (up to 150 kg H 2 /m 3) and …

Hydrogen storage capability of porous silicon powder fabricated from Al–Si alloy …

Porous silicon powder has been fabricated from an Al–Si alloy by etching in strong acids, and its hydrogen storage capacity has been studied. Double acid etching in the fabrication and nickel blending have been proposed to further enhance the hydrogen storage capacity of the etched powder. The etching effectively removed the aluminum …

Research on the energy properties and the storage stability of …

It can be seen directly from Fig. 12 (c) that the attenuation range of the thermal oxidation properties of the Al-4.35Li alloy powder is much greater than the 20%-ASL alloy powder, which once again proves that the AlSiLi intermetallic compound phase significantly improves the oxidation resistance and the storage stability of the alloy …

Effect of Ball Milling Time on Microstructure and Hydrogen Storage ...

3.1 Evolution of the Phase and Microstructure. Figure 1 is the XRD pattern of Nd 5 Mg 41 Ni alloy with different ball milling time and the XRD pattern of as-cast, saturated hydrogen absorption, and fully dehydrogenated. The milling time was 5 h, 10 h, 15 h, and 20 h, respectively. By comparing the XRD pattern of the ball-milled Nd 5 Mg 41 Ni …

High-energy ball milling-induced crystallographic structure …

In this work, the influence of the hot-extrusion method on the hydrogen storage kinetics of Mg-Ni-Y alloy was investigated. It was shown that the extruded Mg 91.47 Ni 6.97 Y 1.56 alloy exhibits improved hydriding and dehydriding (H/D) kinetics, with a capacity of 3.5 wt.% H 2 absorption within 60 s and 5.4 wt.% H 2 desorption within 5 min …

Investigation of ball-milling process on microstructure, thermodynamics and kinetics of Ce–Mg–Ni-based hydrogen storage alloy …

Aiming at improving hydrogen storage performance of Mg-base alloy, the Mg 90 Ce 3 Ni 7 alloy is prepared by medium-frequency induction melting and following mechanical ball-milling process. X-ray diffraction analysis reveals that the ball-milling Mg 90 Ce 3 Ni 7 alloy is composed of Mg, Mg 2 Ni and CeMg 12 phases, whereas subsequent …

High energy ball milling composite modification of Mg2Ni …

This study focuses on the preparation of a Mg 2 Ni hydrogen storage alloy through high-energy ball milling, further enhanced by composite graphene and multi-walled carbon nanotubes (MWCNTs) modification. It is evident that high-energy ball milling successfully incorporates graphene and MWCNTs onto the surface of Mg 2 Ni particles. …

Mg-based alloys are good candidates for solid-state hydrogen storage because of their high hydrogen storage density and abundant resource. Meanwhile, Mg …

Surface chemical state of Ti powders and its alloys: Effect of storage conditions and alloy composition …

Hence, storage time for such a powder is marked as "0 years" in the Table 1. Powders of the same alloys, produced using the same method by the same manufacturer, atomized two and eight years prior to analysis and stored in argon and air were also analyzed.

Efficient LaNi5-Based Hydride-Forming Materials for Energy Storage ...

The series of LaNi 4.8 Fe 0.3 Mn 0.1, LaNi 4.4 Fe 0.3 Al 0.3, La 0.9 Ce 0.1 Ni 5, and La 0.85 Ce 0.15 Ni 5 alloys has been scaled for use in pilot power plants and hydrogen storage systems with a total load of hydrogen storage material from 1 to 80 kg.

Hydrogen storage capability of porous silicon powder fabricated from …

Porous silicon powder has been fabricated from an Al–Si alloy by etching in strong acids, and its hydrogen storage capacity has been studied. Double acid etching in the fabrication and nickel blending have been proposed to further enhance the hydrogen storage capacity of the etched powder. The etching effectively removed the aluminum …

High-entropy materials for energy and electronic applications

With an often highly porous, well-ordered structure and large distance between the metal ions, high-entropy MOFs can be used, for example, in electrochemical …

Ultrahigh energy storage in high-entropy ceramic capacitors with …

Ultrahigh–power-density multilayer ceramic capacitors (MLCCs) are critical components in electrical and electronic systems. However, the realization of a high …

Modification based on internal refinement and external decoration: A powerful strategy for superior thermodynamics and hysteresis …

Motivated by the need to meet the future''s energy demand, the past decade has witnessed substantial advancements in the research and development of various mediums for hydrogen energy storage [1, 2]. Mg-based alloys are the most investigated metallic materials for hydrogen storage in solid state mainly due to the great …

International Journal of Hydrogen Energy

The heat-treated alloy was pulverized by mechanical milling using a high-energy Fritsch P5 planetary ball mill. For each experiment, a known amount of alloy powder (∼ 200 μ m) and tungsten carbide balls of 6 mm diameter were used. The weight ratio between the alloy powder and tungsten carbide balls was 1:15.

Integrated design of hydrogen production and thermal energy storage ...

The hydrogen was obtained by the reaction of Al-Bi-Cu alloy powders with H 2 O for different reaction times, and then the hydrogen generation products were directly sintered at high temperature to obtain Al-Cu alloy based composite phase change thermal energy storage materials. The results indicated that at 50 °C, the hydrogen yield of Al-Bi ...

Capacity degradation mechanism of ternary La–Y–Ni-based hydrogen storage alloys …

In this study, the capacity degradation mechanism of ternary La–Y–Ni-based alloys was investigated in terms of the electrochemistry and solid /H 2 reactions. The AB 3 -type, A 2 B 7 -type and A 5 B 19 -type alloys containing only the (La,Y)Ni 3, (La,Y) 2 Ni 7 and (La,Y) 5 Ni 19 phases, respectively, were used.

High energy ball milling composite modification of Mg2Ni hydrogen storage alloy …

In this study,Mg 2 Ni alloy was prepared by high-energy ball milling mechanical alloying method. First, 45.3 g of Mg powder (purity 99.5 % and particle size 74 μm), 54.7 g of Ni powder (purity 99.5 % and particle size 74 …

Highly reactive hydrogen storage Mg2Ni alloy prepared by ...

This study addresses new ways to obtain a storage Mg 2 Ni alloy from pure Mg and Ni using high-energy reactive milling process followed by annealing heat treatments and hydrogen absorption cycles to improve absorption capacity as well as …

Integrated design of hydrogen production and thermal energy …

The hydrogen was obtained by the reaction of Al-Bi-Cu alloy powders with H 2 O for different reaction times, and then the hydrogen generation products were …

Enhancing antioxidant properties of hydrogen storage alloys …

Oxidation of hydrogen storage alloy leads to the formation of a passive surface oxide layer, which deteriorates its performance. This study introduces a method utilizing polymethyl methacrylate (PMMA) nano-coating to improve the antioxidant properties of hydrogen storage alloys, including LaNi 5, TiMn 2, and Mg 2 Ni.

Effect of LaH3 additive on microstructures and hydrogen storage ...

Hydride-Powder-Sintering(HPS) as a new preparation approach was applied in the low cost V 40 Ti 26 Cr 26 Fe 8 hydrogen storage alloys successfully, which provides an alternative preparation route for other types of hydrogen storage alloys. V 40 Ti 26 Cr 26 Fe 8 alloy exhibits ideal hydrogen absorption-desorption performance after …

Rare Earth Hydrides and Hydrogen Storage Alloys | SpringerLink

This phenomenon can be used to convert different types of energy. Hydrogen storage alloys have been developed into materials, which can store and transport hydrogen in a clean, pollution-free, simple, and safe manner. ... When the ratio of average particle size to average particle size is 0.11 and the mass ratio of coarse fine alloy powder is 0 ...

Activation energy study on nanostructured niobium substituted Mg

The magnesium-based metallic alloys have been exhibited to be the improved hydrogen storage materials. In the present investigation, a nanostructured Mg 67 Ni 33 and Niobium substituted intermetallic compound was prepared by a high-energy ball milling technique for hydrogen storage application. Niobium substitution on the pure …

Electrical cycling characteristics of high-entropy energy storage …

1 · The alloys'' circuit stability and release capability significantly improve with longer grinding durations. The HRD, D, IL, and transfer reaction rate are noticeably enhanced …

International Journal of Hydrogen Energy

The alloy also showed promising hydrogen storage performance at 45 °C while the energy output at this temperature was significantly less due to reduced temperature differential. The study revealed that the LaNi 4.25 Al 0.75 alloy can effectively function as a hydrogen storage material utilizing a heat source at temperatures of 150 …

[Retracted] Preparation of Mg2Ni Hydrogen Storage Alloy …

In this paper, Mg 2 Ni hydrogen storage alloy powder was prepared by high-energy ball milling mechanical alloying method, and the influence of stirring shaft …