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Rare Earth—Mg—Ni‐Based Hydrogen Storage Alloys as Negative Electrode Materials for Ni/MH Batteries…
DOI: 10.1002/CHIN.201105211 Corpus ID: 197191501 Rare Earth—Mg—Ni‐Based Hydrogen Storage Alloys as Negative Electrode Materials for Ni/MH Batteries. @article{Liu2011RareEH, title={Rare Earth—Mg—Ni‐Based Hydrogen Storage Alloys as Negative Electrode Materials for Ni/MH Batteries.}, author={Yongfeng Liu and Yanhui …
AB5-type hydrogen storage alloy used as anodic materials in Ni-MH batteries …
3. Results and discussionIn an alkaline aqueous solution, the hydrogen atoms produced at the surface of the MH alloy powder are instantly adsorbed and then diffused into the bulk of the MH alloy. The electrochemical reactions are therefore expressed as follows (1) H 2 O + e − ↔ H ad + OH − and (2) H ad ↔ H ab where H ad and H ab …
Review Recent progress in hydrogen storage alloys for nickel/metal hydride secondary batteries …
1. IntroductionHydrogen storage alloys, the main materials in the negative electrodes of nickel/metal hydride (Ni–MH) secondary batteries, have been extensively studied for many years because of their dominant role in the battery. Kuriyama et al. [1] have reviewed some efforts such as substitution of alloy components, heat treatment, …
Properties of mechanically alloyed Mg–Ni–Ti ternary hydrogen storage alloys for Ni-MH batteries …
In addition, such Mg-based alloys do not need an activation process unlike the conventional AB 5-type and AB 2-type hydrogen storage materials. Lastly, they possess the advantages of very low toxicity and low price (Mg is the sixth most abundant element in the earth''s crust).
Research progress of TiFe-based hydrogen storage alloys
After being activated, TiFe alloys are widely concerned for their high hydrogen storage density due to their large reversible absorption and desorption capacity of hydrogen at room temperature, low price, abundant resources, moderate hydride decomposition pressure, and good hydrogen absorption and desorption kinetic …
Hydrogen storage alloy development for wide operating temperature nickel-metal hydride battery …
The current high temperature threshold of NiMH battery is limited by several factors (Fig. 2).Oxygen evolution, as shown in Equation (1.4), is the major side reaction at cathode during charge.At elevated temperature, the Ni(OH) 2 cathode''s oxidation potential and oxygen evolution potential tend to shift higher and lower, respectively, during charge …
Nickel/metal hydride batteries using rare-earth hydrogen storage alloy | Journal of Materials …
Fine particles of a hydrogen storage alloy (LaNi3.8Co0.5Mn0.4Al0.3) were microencapsulated with a thin film of nickel of about 0.6 μm thickness. The microencapsulated alloy powders were used as an anode material in a sealed nickel/metal hydride battery. The battery characteristics were compared with those of a battery with …
Design of Hydrogen Storage Alloys/Nanoporous Metals Hybrid Electrodes for Nickel-Metal Hydride Batteries …
However, the poor high-rate dischargeability of the negative electrode materials—hydrogen storage alloys (HSAs) limits applications of Ni-MH batteries in high-power fields due to large polarization.
Kinetic and thermodynamic studies of hydrogen storage alloys as negative electrode materials for Ni/MH batteries…
This paper reviews the present performances of intermetallic compound families as materials for negative electrodes of rechargeable Ni/MH batteries. The performance of the metal-hydride electrode is determined by both the kinetics of the processes occurring at the metal/solution interface and the rate of hydrogen diffusion …
Advanced hydrogen storage alloys for Ni/MH rechargeable batteries
Hydrogen storage alloys are of particular interest as a novel group in functional materials owing to their potential and practical applications in Ni/MH rechargeable batteries. This review is devoted to the specific alloy families developed for high-energy and high-power Ni/MH batteries in t
Hydrogen Storage and Battery Technology Group
Ilizel''s research focuses on fabrication and storage optimization of a novel porous solid-state hydrogen storage material in fuel cell integrated systems to reduce the hydrogen storage pressure to only 10MPa, six …
Investigations of AB5-type hydrogen storage materials with enhanced hydrogen storage …
R.K. Singh et al. [2] found 1.66 wt% hydrogen storage capacity for the alloy MmNi 4.9 Fe 0.1. The aim of the present study is to investigate AB 5-type novel hydrogen storage materials with enhanced hydrogen storage capacity.
Challenges to developing materials for the transport and storage of hydrogen …
Recent analysis indicates that the slow pace of infrastructure development for hydrogen transport and storage is affecting its economics and consumer appeal 2.A major barrier is the low hydrogen ...
Hydrogen Storage Alloys
Hydrogen–Metal Systems: Electrochemical Reactions (Fundamentals and Applications) C. Iwakura, ...S. Nohara, in Encyclopedia of Materials: Science and Technology, 20019.1 Partial Substitution of Alloy Components by Foreign Metals Hydrogen storage alloys are pulverized during charge–discharge processes due to repeated lattice expansion and …
Progress of hydrogen storage alloys for Ni-MH rechargeable …
As clean energy materials, hydrogen storage alloys have been widely investigated and applied as negative electrodes for nickel-metal hydride (Ni-MH) …
The electrochemical performance of AB3-type hydrogen storage alloy as anode material …
For the purpose of lowering the cost of metal hydride electrode, the La of LaY2Ni9 electrode was replaced by Ce. The electrochemical performances of the CeY2Ni9 negative electrode, at a room and different temperatures, were compared with the parent alloy LaY2Ni9. At room temperature during a long cycling, the evolution of the …
High Entropy Alloys: Emerging Materials for Advanced Hydrogen …
High entropy alloys (HEAs) have attracted substantial attention in diverse fields, including hydrogen storage, owing to their unique structural and functional …
Progress of hydrogen storage alloys for Ni-MH rechargeable power batteries in electric vehicles…
As clean energy materials, hydrogen storage alloys have been widely investigated and applied as negative electrodes for nickel-metal hydride (Ni-MH) rechargeable batteries due to their high energy densities and environment-friendliness. This review details the ...
High-performance nickel metal hydride battery anode with …
Current AB5-type hydrogen storage alloys employed in nickel-metal hydride (NiMH) batteries exhibit exceptional low-temperature discharge performance but suffer from limited cycle life and insufficient high-temperature stability. To overcome these challenges, we introduce a hydrothermal synthesized LaF3 coating layer on the surface of …
A start of the renaissance for nickel metal hydride batteries: a ...
Nickel metal hydride (Ni-MH) batteries have demonstrated key technology advantages for applications in new-energy vehicles, while the main challenge derives from the insufficient …
(PDF) Kinetic and thermodynamic studies of hydrogen storage alloys as negative electrode materials for Ni/MH batteries…
Kinetic and thermodynamic studies of hydrogen storage alloys as negative electrode materials for Ni/MH batteries: A review March 2013 Journal of Solid State Electrochemistry 18(3):577-593
Nickel/metal hydride batteries using rare-earth hydrogen storage alloy | Journal of Materials …
Fine particles of a hydrogen storage alloy (LaNi 3.8 Co 0.5 Mn 0.4 Al 0.3) were microencapsulated with a thin film of nickel of about 0.6 μm thickness.The microencapsulated alloy powders were used as an anode material in a sealed nickel/metal hydride battery. The ...
Review Rare earth–Mg–Ni-based hydrogen storage alloys as negative electrode materials for Ni/MH batteries …
The reports by Kadir et al. motivated intense interests in R–Mg–Ni-based hydrogen storage alloys. By a similar sintering process, Chen et al. [26], [27] obtained several kinds of R–Mg–Ni-based alloys with a PuNi 3-type structure and these included LaCaMgNi 9, LaCaMgNi 6 Al 3 and LaCaMgNi 6 Mn 3, etc. Crystallographic results …
Hydrogen Storage Alloys
The main functions of hydrogen storage alloys include: (1) energy conversion; (2) hydrogen separation, purification, and recovery; (3) hydrogen isotope separation; (4) catalysis; (5) …
Phase Transformation and Electrochemical Feature of an AB4-Type La0.60Sm0.20Mg0.20Ni3.50Al0.20 Hydrogen Storage Alloy for Ni/MH Batteries ...
Request PDF | Phase Transformation and Electrochemical Feature of an AB4-Type La0.60Sm0.20Mg0.20Ni3.50Al0.20 Hydrogen Storage Alloy for Ni/MH Batteries | La–Mg–Ni-based alloys with a novel AB4 ...
A start of the renaissance for nickel metal hydride batteries: a hydrogen storage alloy …
Nickel metal hydride (Ni-MH) batteries have demonstrated key technology advantages for applications in new-energy vehicles, while the main challenge derives from the insufficient cycle lives (about 500 cycles) of their negative electrode materials—hydrogen storage alloys. As a result, progress in their development has …
Review Recent progress in hydrogen storage alloys for nickel/metal hydride secondary batteries …
Introduction Hydrogen storage alloys, the main materials in the negative electrodes of nickel/metal hydride (Ni–MH) secondary batteries, have been extensively studied for many years because of their dominant role in the battery. Kuriyama et al. [1] have reviewed ...
A high-performance aqueous iron–hydrogen gas battery
This article highlights the significance of the deployment of liquid redox molecules as active species in hydrogen gas batteries, which provides an effective …