Journal Article10.1016/0022-5088(85)90061-X
Correlations between the structural properties, the stability and the hydrogen content of substituted LaNi5 compounds
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TL;DR: In this article, a review of thermodynamic and structural properties of LaNi5 and its β hydride is presented, including the variations in the hydriding properties as a result of partial substitution of the constituents are presented.
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Abstract: Thermodynamic and structural properties including electrochemical behaviour of LaNi5 and its β hydride are reviewed. The different structural models of the β hydride are discussed. The variations in the hydriding properties as a result of partial substitution of the constituents are presented.
Qualitative and quantitative models that relate hydriding characteristics (stability, hydrogen content) to other physical properties (formation enthalpy, unit cell volume, interstitial hole size, electronic structure) of these intermetallics are briefly reviewed. The contribution of the authors concerning the correlation between the stability and the heat of formation of the intermetallic compounds is presented. The crystal structures of some substituted LaNi5 compounds and related hydrides demonstrate the correlation between the absorption capacity and the number of sites occupied by hydrogen atoms.
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Citations
From permanent magnets to rechargeable hydride electrodes
J.J.G. Willems,K.H.J. Buschow +1 more
TL;DR: In this article, a brief historical survey is given of how the study of coercitivity mechanisms in SmCo5 permanent-magnet materials eventually led to the discovery of the favorable hydrogen sorption properties of the compound LaNi5.
424
Some factors affecting the cycle lives of LaNi5-based alloy electrodes of hydrogen batteries
Tetsuo Sakai,Keisuke Oguro,Hiroshi Miyamura,Nobuhiro Kuriyama,Akihiko Kato,Hiroshi Ishikawa,Chiaki Iwakura +6 more
TL;DR: In this article, the effect of substituting elements to improve the cycle life increased in the order: M ≡ Mn, Ni, Cu, Cr, AlandCo, and the lower the capacity, the smaller the volume expansion ratio, the slower the pulverizing rate, and lower the Vickers hardness were.
308
Progress of hydrogen storage alloys for Ni-MH rechargeable power batteries in electric vehicles: A review
TL;DR: In this paper, the progress made in the last few decades on hydrogen storage alloys, such as AB 5 -type, AB 2 -type alloys and Mg-based alloys for nickel-metal hydride (Ni-MH) rechargeable batteries is discussed.
254
Electrochemical Hydrogen Storage Materials: State-of-the-Art and Future Perspectives
Yue Dong,Nan Si,Chunwei Zhang +2 more
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TL;DR: This review summarizes the state-of-the-art and future perspectives of electrochemical hydrogen storage materials, highlighting the need for novel materials with high surface area, conductivity, and low cost to achieve efficient hydrogen storage for renewable energy applications.
227
The influence of cobalt on the electrochemical cycling stability of LaNi5-based hydride forming alloys
TL;DR: In this article, the influence of cobalt substitution for nickel on the electrochemical cycle life of LaNi5-based alloys was investigated by means of X-ray diffraction.
163
References
The electronegativity parameter for transition metals: Heat of formation and charge transfer in alloys
TL;DR: In this article, it is shown that the work function of a metal is proportional to the chemical potential for electrons in Wigner-Seitz atomic cells; the proportionality factor is found to be about 1·4.
591
Hydrogen absorption in LaNi5 and related compounds: Experimental observations and their explanation
TL;DR: In this paper, a study of the change in hydrogen sorption properties caused by partially replacing La or Ni in LaNi5 by other metals is presented. But this study assumes that the more stable the original RNi5 compound, the weaker is the tendency to form a rNi5--hydride.
457
Hydrides formed from intermetallic compounds of two transition metals: a special class of ternary alloys
TL;DR: In this paper, the authors review available experimental information on the existence, thermodynamic stability and physical properties of hydrides formed by the absorption of hydrogen gas in intermetallic compounds of two transition metals.
376
A correlation between the interstitial hole sizes in intermetallic compounds and the thermodynamic properties of the hydrides formed from those compounds
TL;DR: In this paper, a correlation between the stabilities of metal hydrides (measured in terms of the free energies of formation of the hydride phase per mole H 2 ) and the radii of tetrahedral holes in both hexagonal AB 5 and cubic AB (B 2 ) intermetallic compounds was established.
313
Phase relations and hydrogen absorption in the lanthanum-nickel system
K.H.J. Buschow,H.H. Van Mal +1 more
TL;DR: The LaNi system has been reinvestigated in the range 50-100 at. % Ni as mentioned in this paper, and the following compounds were observed: LaNi, LaNi 1.4, LaNi 2, La Ni 3, La 2 Ni 7 and LaNi 5.
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