Increase in the Surface Catalytic Ability by Addition of Palladium in C14 Metal Hydride Alloy

Kim, Young; Ouchi, T.; Nei, Jean; Chang, Shiuan

doi:10.3390/batteries3030026

Cited by 8 publications

(3 citation statements)

References 134 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it also enhances the surface catalytic ability and improves both HRD and low-temperature performance for the alloy [170]. Improvement in HRD of C14 alloys was also reported by Yang, Ovshinsky, and their coworkers [171,172].…”

Section: Palladiummentioning

confidence: 57%

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

2017

Self Cite

View full text Add to dashboard Cite

C14 Laves phase alloys play a significant role in improving the performance of nickel/metal hydride batteries, which currently dominate the 1.2 V consumer-type rechargeable battery market and those for hybrid electric vehicles. In the current study, the properties of C14 Laves phase based metal hydride alloys are reviewed in relation to their electrochemical applications. Various preparation methods and failure mechanisms of the C14 Laves phase based metal hydride alloys, and the influence of all elements on the electrochemical performance, are discussed. The contributions of some commonly used constituting elements are compared to performance requirements. The importance of stoichiometry and its impact on electrochemical properties is also included. At the end, a discussion section addresses historical hurdles, previous trials, and future directions for implementing C14 Laves phase based metal hydride alloys in commercial nickel/metal hydride batteries.

show abstract

Section: Palladiummentioning

confidence: 57%

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the Laves phase-based AB 2 family, doping effects of Pd [14] and B [15] to a C14-predominated alloy were studied and a comparison between C14-and C15-MH alloys was also presented [16]. The preliminary conclusions are both Pd and a newly formed V 3 B 2 phase improve the surface catalytic ability and C15 alloy is more suitable for high-rate application.…”

Section: Metal Hydride Alloysmentioning

confidence: 99%

Research in Nickel/Metal Hydride Batteries 2017

Kim

2018

Batteries

Self Cite

View full text Add to dashboard Cite

“…The metal atoms contract to form its original metal crystal structure [14]. The metal alloys in Table 1 can easily be synthesized by a well-known equilibrium procedure called arc or induction melting [15,16]. However, alloys prepared through this method suffer from poor hydrogenation performances and poisoning intolerance [17].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review on Hydrogen Absorption Behaviour of Metal Alloys Prepared through Mechanical Alloying

Somo

Maponya

Davids

et al. 2020

Metals

View full text Add to dashboard Cite

Hydride-forming alloys are currently considered reliable and suitable hydrogen storage materials because of their relatively high volumetric densities, and reversible H2 absorption/desorption kinetics, with high storage capacity. Nonetheless, their practical use is obstructed by several factors, including deterioration and slow hydrogen absorption/desorption kinetics resulting from the surface chemical action of gas impurities. Lately, common strategies, such as spark plasma sintering, mechanical alloying, melt spinning, surface modification and alloying with other elements have been exploited, in order to overcome kinetic barriers. Through these techniques, improvements in hydriding kinetics has been achieved, however, it is still far from that required in practical application. In this review, we provide a critical overview on the effect of mechanical alloying of various metal hydrides (MHs), ranging from binary hydrides (CaH2, MgH2, etc) to ternary hydrides (examples being Ti-Mn-N and Ca-La-Mg-based systems), that are used in solid-state hydrogen storage, while we also deliver comparative study on how the aforementioned alloy preparation techniques affect H2 absorption/desorption kinetics of different MHs. Comparisons have been made on the resultant material phases attained by mechanical alloying with those of melt spinning and spark plasma sintering techniques. The reaction mechanism, surface modification techniques and hydrogen storage properties of these various MHs were discussed in detail. We also discussed the remaining challenges and proposed some suggestions to the emerging research of MHs. Based on the findings obtained in this review, the combination of two or more compatible techniques, e.g., synthesis of metal alloy materials through mechanical alloying followed by surface modification (metal deposition, metal-metal co-deposition or fluorination), may provide better hydriding kinetics.

show abstract

Increase in the Surface Catalytic Ability by Addition of Palladium in C14 Metal Hydride Alloy

Cited by 8 publications

References 134 publications

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

Research in Nickel/Metal Hydride Batteries 2017

A Comprehensive Review on Hydrogen Absorption Behaviour of Metal Alloys Prepared through Mechanical Alloying

Contact Info

Product

Resources

About