Title:
【発明の名称】非水電解液二次電池
Document Type and Number:
Japanese Patent JP2822659
Kind Code:
B2
Abstract:
PURPOSE:To improve a self-discharge characteristic by having a negative electrode composed of lithium, a lithium alloy, or a lithium compound; a positive electrode having the active material of a composite oxide; a nonaqueous electrolyte including lithium salt; and a separator; and using a separator, previously immersed in an alkaline water solution and dried, as the said separator. CONSTITUTION:A battery is composed of a positive electrode 1, case 2, separator 3, negative electrode 4, sealing plate 5, and gasket 6. The battery has the negative electrode 4 composed of lithium, a lithium alloy, or a lithium compound; the positive electrode 1 having the active material of a composite oxide represented in LiMn2-XMeXO4 (Me: at least one kind out of Co, Cr, Ni, Ta, and Zn); a nonaqueous electrolyte including lithium salt; and the separator 3; and a separator previously immersed in an alkaline water solution and dried is used as the separator 3. Such the alkaline treatment of the separator 3 acts on the restraint of the resolution of an organic electrolyte or on reaction to resolution products. This can improve a self-discharge characteristic.
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Inventors:
Yasuhiko Mito
Yuuki Murai
Shuji Ito
Yoshinori Toyoguchi
Yuuki Murai
Shuji Ito
Yoshinori Toyoguchi
Application Number:
JP29580390A
Publication Date:
November 11, 1998
Filing Date:
October 31, 1990
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01M2/16; H01M4/485; H01M4/505; H01M4/525; H01M10/05; H01M10/052; H01M10/0566; (IPC1-7): H01M10/40; H01M2/16
Attorney, Agent or Firm:
Tomoyuki Takimoto (1 person outside)