Title:
HYDROGEN STORAGE ALLOY POWDER AND NICKEL HYDROGEN SECONDARY BATTERY USING THIS HYDROGEN STORAGE ALLOY POWDER
Document Type and Number:
WIPO Patent Application WO/2016/143519
Kind Code:
A1
Abstract:
This nickel hydrogen secondary battery 2 is provided with: an outer casing can 10; and an electrode group 22 that is contained within the outer casing can 10 together with an alkaline electrolyte solution in a hermetically sealed state. The electrode group 22 is composed of a positive electrode 24 and a negative electrode 26, which are superposed on each other with a separator 28 being interposed therebetween. The negative electrode 26 contains a hydrogen storage alloy powder that is an aggregate of hydrogen storage alloy particles. If M is the average particle diameter of the hydrogen storage alloy particles, P is the particle diameter equal to 1/2 of M, and Q is the particle diameter equal to 1/3 of M, the content of the particles having particle diameters of P or less is less than 20% by mass of the whole hydrogen storage alloy powder, and the content of the particles having particle diameters of Q or less is less than 10% by mass of the whole hydrogen storage alloy powder.
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Inventors:
KIHARA MASARU (JP)
SAGUCHI AKIRA (JP)
SHINGAI YUSUKE (JP)
ISHIDA JUN (JP)
KAI TAKUYA (JP)
KAJIWARA TAKESHI (JP)
SAGUCHI AKIRA (JP)
SHINGAI YUSUKE (JP)
ISHIDA JUN (JP)
KAI TAKUYA (JP)
KAJIWARA TAKESHI (JP)
Application Number:
PCT/JP2016/055451
Publication Date:
September 15, 2016
Filing Date:
February 24, 2016
Export Citation:
Assignee:
FDK CORP (JP)
International Classes:
H01M4/38; B22F1/00; B22F5/00; C22C19/00; H01M4/24; H01M10/30
Domestic Patent References:
WO2014118846A1 | 2014-08-07 |
Foreign References:
JPH0837004A | 1996-02-06 | |||
JP2014089879A | 2014-05-15 | |||
JP2014026844A | 2014-02-06 | |||
JP2000277096A | 2000-10-06 |
Other References:
See also references of EP 3270444A4
Attorney, Agent or Firm:
OGAWA, EIJI (JP)
Eiji Ogawa (JP)
Eiji Ogawa (JP)
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