Invention Grant
- Patent Title: Hydrogen absorbing alloy, hydrogen absorbing alloy electrode, secondary battery, and production method of hydrogen absorbing alloy
- Patent Title (中): 吸氢合金，吸氢合金电极，二次电池及储氢合金的制造方法
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Application No.: US13090184Application Date: 2011-04-19
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Publication No.: US08277582B2Publication Date: 2012-10-02
- Inventor: Manabu Kanemoto , Tadashi Kakeya , Minoru Kuzuhara , Masaharu Watada , Tetsuo Sakai , Tetsuya Ozaki
- Applicant: Manabu Kanemoto , Tadashi Kakeya , Minoru Kuzuhara , Masaharu Watada , Tetsuo Sakai , Tetsuya Ozaki
- Applicant Address: JP Kyoto JP Tokyo
- Assignee: GS Yuasa International Ltd.,National Institute of Advanced Industrial Science and Technology
- Current Assignee: GS Yuasa International Ltd.,National Institute of Advanced Industrial Science and Technology
- Current Assignee Address: JP Kyoto JP Tokyo
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Priority: JP2005-233533 20050811; JP2005-233781 20050811
- Main IPC: C22C30/00
- IPC: C22C30/00 ; C22C19/03 ; C21D9/00
Abstract:
The present invention provides a hydrogen absorbing alloy containing a phase of a Pr5Co19 type crystal structure having a composition defined by a general formula A(4−w)B(1+w)C19 (A denotes one or more element(s) selected from rare earth elements including Y (yttrium); B denotes an Mg element; C denotes one or more element(s) selected from a group consisting of Ni, Co, Mn, and Al; and w denotes a numeral in a range from −0.1 to 0.8) and having a composition as a whole defined by a general formula R1xR2yR3z (15.8≦x≦17.8, 3.4≦y≦5.0, 78.8≦z≦79.6, and x+y+z=100; R1 denotes one or more element(s) selected from rare earth elements including Y (yttrium); R2 denotes an Mg element, R3 denotes one or more element(s) selected from a group consisting of Ni, Co, Mn, and Al; the numeral of Mn+Al in the z is 0.5 or higher; and the numeral of Al in the z is 4.1 or lower).
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