Title:
ALKALINE CELL
Document Type and Number:
WIPO Patent Application WO/2016/117127
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an alkaline cell in which a sufficient amount of an electrolyte is held in the positive-electrode side, and heavy load discharge characteristics are improved, even when a zinc alloy powder containing 25-40 mass% of a fine powder having a granularity of 75 μm or less is used for the negative-electrode material. This alkaline cell (1) is characterized in that a positive-electrode mixture (21) containing manganese dioxide and an electroconductive material is packed into a positive-electrode can (11) having a bottomed cylindrical shape, a negative-electrode mixture (23) containing a zinc powder is packed on the inner-peripheral side of a separator (22) provided on the inner-peripheral side of the positive-electrode mixture (21), the negative-electrode mixture (23) contains 25-40 mass% of zinc particles having a granularity of 75 μm or less, the positive-electrode mixture (21) comprises a plurality of hollow cylindrical pellets (21a, 21b, 21c) coaxially stacked in the positive-electrode can (11), the total s of the respective lengths of gaps (51, 52) between each of the pellets is 1-14% of the total d of the respective lengths of the pellets, and a sufficient amount of an electrolyte is held in the gaps (51, 52) between the positive-electrode-side pellets.
Inventors:
ENDO TAKAHIRO (JP)
NATSUME YUKI (JP)
NOGAMI TAKEO (JP)
TSUZUKI HIDENORI (JP)
NATSUME YUKI (JP)
NOGAMI TAKEO (JP)
TSUZUKI HIDENORI (JP)
Application Number:
PCT/JP2015/051918
Publication Date:
July 28, 2016
Filing Date:
January 23, 2015
Export Citation:
Assignee:
FDK ENERGY CO LTD (JP)
International Classes:
H01M6/08; H01M4/06
Domestic Patent References:
| WO2012049720A1 | 2012-04-19 | |||
| WO2011001603A1 | 2011-01-06 |
Foreign References:
| JPH02100264A | 1990-04-12 | |||
| JP2008066100A | 2008-03-21 | |||
| JP2009266661A | 2009-11-12 | |||
| JP2011028895A | 2011-02-10 | |||
| JP2005322613A | 2005-11-17 | |||
| JP2001155720A | 2001-06-08 | |||
| JP2000106176A | 2000-04-11 |
Other References:
See also references of EP 3249726A4
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
All international patent business corporation (JP)
All international patent business corporation (JP)
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