Title:
HYDROGEN STORAGE ALLOY AND NICKEL-HYDROGEN BATTERY
Document Type and Number:
Japanese Patent JP2015113522
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydrogen storage alloy which is not only free from rare earth elements, cobalt, magnesium, and aluminum, but also has battery characteristics equal to or better than a general-purpose AB-type MmNialloy, and a nickel-hydrogen battery using the alloy as an anode.SOLUTION: An ABtype hydrogen storage alloy is provided which is represented by the general formula ZrTiNiMnV(where a to e represent atom ratios of each element), where the a is 0.63-0.73, b is 0.27-0.37, and a+b=1; and the c is 1.16-1.20, d is 0.49-0.53, and e is 0.19 to 0.23; and it is preferred that the crystal structure is composed of Laves phase of C-14 type and C-15 type and a proportion of the C-15 type is in the range of 10 to 60 mass% of the Laves phase. The nickel-hydrogen battery is also provided which uses the hydrogen storage alloy as an anode.
Inventors:
OSAWA MASAHITO
TSUNOKAKE SHIGERU
KATSURA SHIORI
IWAKI TSUTOMU
SAKAI TETSUO
TSUNOKAKE SHIGERU
KATSURA SHIORI
IWAKI TSUTOMU
SAKAI TETSUO
Application Number:
JP2013259016A
Publication Date:
June 22, 2015
Filing Date:
December 16, 2013
Export Citation:
Assignee:
JAPAN METALS & CHEM CO LTD
NAT INST OF ADVANCED IND SCIEN
NAT INST OF ADVANCED IND SCIEN
International Classes:
C22C19/00; H01M4/38
Domestic Patent References:
| JPH11176434A | 1999-07-02 | |||
| JPH04301045A | 1992-10-23 |
Foreign References:
| US6491867B1 | 2002-12-10 |
Other References:
S.K.ZHANG、外５名: "The phase structure and electrochemical properties of the melt-spun alloy Zr0.7 Ti0.3Mn0.4V0.4Ni1.2", JOURNAL OF ALLOYS AND COMPOUNDS, vol. Vol.330-332, JPN6016048237, 17 January 2002 (2002-01-17), NL, pages Page.855-860
Attorney, Agent or Firm:
Ginza Marronnier Patent Office