The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 1999
Filed:
Jul. 12, 1996
Hideki Iba, Toyota, JP;
Etsuo Akiba, Tsukuba, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Director-General of Agency of Industrial Science and Technology, Tokyo, JP;
Abstract
This invention relates to a hydrogen-absorbing alloy, and particularly provides a hydrogen-absorbing alloy having a body-centered cubic structure which has a periodical structure formed by spinodal decomposition, has a large hydrogen storage amount, has excellent hydrogen desorption characteristics and can mitigate activation conditions, the alloy comprises at least two elements of alloy components, wherein the relational curve between chemical free energy of solid solutions and an alloy composition has a shape describing an upwardly convexed curve, or said alloy comprises two solid solutions having a regular periodical structure formed by spinodal decomposition within a region satisfying the relation d.sup.2 G/dX.sub.B.sup.2 <0 (where G is chemical free energy and X.sub.B is a solute alloy concentration) as the principal phase.