Application Number: 00103194
Application Date: 2000.03.23
Publication Number: 1268781
Publication Date: 2000.10.04
Priority Information: 1999/3/30 JP 89581/99
International: H01M4/24;H01M10/30
Applicant(s) Name: Sanyo Electric Co., Ltd.
Address:
Inventor(s) Name: Satokuchi Kosuke;Takee Masao
Patent Agency Code: 11021
Patent Agent: wang huimin
Abstract A sealed type alkaline storage battery in which the entire surface of a positive electrode plate is opposed to a negative electrode plate through a separator, wherein a discharge capacity ratio of the negative electrode plate to the positive electrode plate is determined to be more than or equal to 1.9, an area ratio of the negative electrode plate to the positive electrode plate is determined to be less than or equal to 1.4, and the thickness of the positive electrode plate is determined to be less than or equal to 0.6 mm. The storage battery can balance suppression of generation of hydrogen gas with improvement of absorption of oxygen gas and provide a storage battery having long life, by setting a optimization ratio of negative electrode, positive electrode and area.