公开(公告)号：EP1519434A1

公开(公告)日：2005-03-30

申请号：EP03733138.6

申请日：2003-05-28

申请人： Toshiba Battery Co., Ltd.

发明人： MIYAMOTO, Kunihiko ,  IRIE, Shuichiro 907, 21-1, Miyamoto-cho 1-chome ,  KASHIWAZAKI, Eiki 147-2-202, Oaza Hitomi ,  OKAYAMA, Teiji

IPC分类号： H01M6/08 ,  H01M4/06 ,  H01M4/52

CPC分类号： H01M4/62 ,  H01M4/06 ,  H01M4/364 ,  H01M4/52 ,  H01M6/08 ,  H01M2010/4292

摘要： The object of the invention is to provide an alkali primary battery being excellent in high rate discharge characteristics with less increase of the inner pressure by generating hydrogen in the overdischarge process.
The invention provides a sealed nickel zinc primary battery comprising at least a positive electrode having a higher oxide of nickel as a positive electrode active substance, a negative electrode having zinc or an alloy thereof as a negative electrode active substance, a separator and an electrolyte solution housed in a vessel, wherein manganese dioxide is added in a proportion of 3 to 7% by mass relative to the higher oxide of nickel in the positive electrode, and the ratio between the theoretical capacity of the negative electrode to the theoretical capacity of the positive electrode (the theoretical capacity of the negative electrode/theoretical capacity of the positive electrode) is in the range of 1.2 to 1.0.

摘要翻译： 本发明的目的是提供一种具有优异的高倍率放电特性的碱性一次电池，其中在过放电过程中产生氢气，内部压力的增加较少。 本发明提供一种密封的镍锌一次电池，其至少包括具有作为正极活性物质的镍的较高氧化物的正极，具有锌的负极或其合金作为负极活性物质，隔膜 和容纳在容器中的电解质溶液，其中相对于正极中的较高的镍的氧化物，以相对于正极的高的氧化物为3〜7质量％的比例添加二氧化锰，负极的理论容量与理论值的比例 正极的容量（负极的理论容量/正极的理论容量）在1.2〜1.0的范围内。