公开(公告)号：US20180013174A1

公开(公告)日：2018-01-11

申请号：US15545219

申请日：2015-01-23

Applicant: FDK ENERGY CO., LTD.

Inventor： Takahiro Endo ,  Yuki Natsume ,  Takeo Nogami ,  Hidenori Tsuzuki

IPC: H01M10/28 ,  H01M6/18 ,  H01M4/24 ,  H01M4/06 ,  H01M4/42 ,  H01M4/50 ,  H01M6/02

CPC classification number: H01M10/283 ,  H01M4/06 ,  H01M4/24 ,  H01M4/244 ,  H01M4/42 ,  H01M4/50 ,  H01M4/502 ,  H01M6/02 ,  H01M6/08 ,  H01M6/185 ,  H01M2220/30

Abstract: An alkaline battery has a positive electrode mixture containing manganese dioxide and a conductive material filling a tubular positive electrode can that is closed at one end. A negative electrode mixture containing a zinc powder filling on an inner peripheral side of a separator is disposed on an inside of the positive electrode mixture. The negative electrode mixture contains zinc particles with a granularity of 75 μm or less at 25 to 40 mass %. The positive electrode mixture has a plurality of tubular pellets stacked inside the positive electrode can coaxially with the positive electrode can. A sum s of lengths of gaps between the pellets is set at 1 to 14% with respect to a sum d of lengths of the pellets. Thus, a sufficient amount of the electrolyte is held in the gaps and between the pellets in the positive electrode.