US2003077201A1PendingUtilityA1

Hydrogen storage alloy

12
Priority: Jun 10, 2000Filed: Jun 9, 2001Published: Apr 24, 2003
Est. expiryJun 10, 2020(expired)· nominal 20-yr term from priority
Inventors:Jeong Park
C22C 14/00Y02E60/10H01M 4/383C22C 16/00Y02P20/129C22C 27/06Y02E60/32C01B 3/0031
12
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Claims

Abstract

The present invention relates to Ti—Zr—Mn—Cr based Laves Phase hydrogen storage alloy having high hydrogen storage capacity, and excellent slopping and hysterisis characteristics. In the Ti—Zr—Mn—Cr based Laves Phase hydrogen storage alloy, the hydrogen storage alloy has a composition of (Ti 1−x Zr x ) 1+A Mn 2−y Cr y , and has a non-stoichiometry composition because A is larger than 0.

Claims

exact text as granted — not AI-modified
1 . A hydrogen storage alloy of Laves phase in Ti—Zn—Mn—Cr group having composition of (Ti 1−x Zr x ) 1+A Mn 2−y Cr y , where ‘A’ is greater than ‘0’, to have non-stoichiometry composition.  
     
     
         2 . A hydrogen storage alloy as claimed in  claim 1 , wherein the ‘A’ is in a range greater than ‘0’ and smaller than approx. 0.2.  
     
     
         3 . A hydrogen storage alloy as claimed in  claim 2 , wherein the ‘A’ is in a range greater than ‘0’ and smaller than approx. 0.1.  
     
     
         4 . A hydrogen storage alloy as claimed in  claim 3 , wherein 0≦X≦0.3, and 1.0≦Y≦1.2.  
     
     
         5 . A hydrogen storage alloy as claimed in one of claims  1 - 4 , wherein the Cr is substituted with ‘M’ having at least one of V and Cu, to have composition of (Ti 1−x Zr x ) 1+A Mn 2−y Cr y−B M B .  
     
     
         6 . A hydrogen storage alloy as claimed in one of claims  5 , wherein the ‘B’ is in a range greater than 0, and smaller than approx. 0.4.  
     
     
         7 . A hydrogen storage alloy as claimed in one of claims  6 , wherein the ‘B’ is in a range greater than 0, and smaller than approx. 0.3.  
     
     
         8 . A hydrogen storage alloy of Laves phase in Ti—Zn—Mn—Cr group wherein the Cr is substituted with ‘M’ having at least one of V and Cu, to have stoichiometry composition of Ti 1−x Zr x Mn 2−y Cr y−B M B .  
     
     
         9 . A hydrogen storage alloy as claimed in  claim 8 , wherein the ‘B’ is in a range greater than 0, and smaller than approx. 0.4.  
     
     
         10 . A hydrogen storage alloy as claimed in  claim 9 , wherein 0≦X≦0.3, and 1.0≦Y≦1.2.

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