Ca-Mg-Ni containing alloys, method for preparing the same and use thereof for gas phase hydrogen storage

a technology of ni-containing alloys and gas phase hydrogen storage, which is applied in the direction of fuel cell auxiliaries, inorganic chemistry, fuel cells, etc., can solve the problems of low gravimetric storage density, high cost, and inability to widen the use of hydrogen energy
US20050112018A1Inactive Publication Date: 2005-05-26HERA HYDROGEN STORAGE SYST
5 Cites 23 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
HERA HYDROGEN STORAGE SYST
Publication Date
2005-05-26
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Disclosed are new Ca, Mg and Ni-containing alloys of the general formula: (CacMgdMe)b(Ni1-zTz)a where: M is at least one metal selected from the group consisting of Y, Ce, La, Pr, Nd, Th, Nd, Ti, V, Zr, Ta, Hf, Sr, Ba and Misch metals; T is at least one element selected from the group consisting of Al, Zn, Cu, Fe, Co, Mn, Cr, Mo, W, Si, Ga, Ge, In, Sn, Ag, C and B; a is an integer equal to 2 or 5; z is a number ranging from 0 to 0.5; and when a is equal to 2, then 0.9≦b≦1.1; and when a is equal to 5, then either 1.75≦b≦2.25 or 0.75≦b≦1.31. These alloys which are of the AB2, A2B5 or AB5 types, may be single phase or multiphase and are useful for reversibly absorbing hydrogen from a gas phase. Also disclosed is a method for preparing the above alloys.
Need to check novelty before this filing date? Find Prior Art

Description

FIELD OF THE INVENTION

[0001] The present invention is directed to Ca, Mg and Ni-containing alloys. It is also directed to a method for preparing these alloys and to their use for reversibly absorbing hydrogen from a gas phase. BACKGROUND OF THE INVENTION

[0002] The use of hydrogen gas as a fuel for PEM fuel cells has received considerable attention in recent years because PEM fuel cells using pure hydrogen can provide high efficiency and ultra clean power. Unfortunately, widespread use of hydrogen energy is not currently feasible because of economic and technological barriers. One of the important barriers is the lack of cost effective, safe hydrogen storage method.

[0003] Hydrogen gas is very light. It can be compressed under high pressure and stored in pressurized vessels. It can also be liquefied and stored in liquid form. Hydrogen also reacts with metal or non-metals to form hydrides. Some metal hydrides called “low temperature metal hydrides” are reversible at ambient temperat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More