Title:
【発明の名称】非水電解液電池
Document Type and Number:
Japanese Patent JP3322444
Kind Code:
B2
Abstract:
PURPOSE:To restrain internal resistance from rising after a partial discharge by providing a negative electrode made from a predetermined carbonaceous substance and a positive electrode which uses manganese dioxide as active material, and adding an additive to a nonaqueous electrolyte containing a low boiling-point solvent. CONSTITUTION:An active material comprises 86wt.% manganese dioxide as active material, 10wt.% carbon powders as a conductor, and 4wt.% fluororesin as a binding resin mixed together. The mixture is formed into a slurry in pure water, and the slurry is applied to a gypsum lath board made of stainless steel and is dried, cut into a predetermined size, and heat treated to obtain a positive electrode 1. A lithium-aluminum alloy is used as a negative electrode 2, and the positive electrode 1 and the negative electrode 2 are wound together with a microporous separator 3 made from a polyethylene therebetween and inserted into a positive electrode can 4. A low boiling-point solvent is mixed in an ethylene carbonate and a butylene carbonate and diethyl phthalate is added to the mixture to obtain a nonaqueous electrolyte. The preservation characteristic of the electrolyte after a partial discharge is therefore enhanced while an excellent low-temperature discharge characteristic is maintained.
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Inventors:
Maki Hara
Minoru Fujimoto
Nobuhiro Nishiguchi
Minoru Fujimoto
Nobuhiro Nishiguchi
Application Number:
JP16546493A
Publication Date:
September 09, 2002
Filing Date:
July 05, 1993
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H01M6/16; H01M4/133; H01M4/134; H01M4/50; H01M4/587; H01M10/05; H01M10/052; H01M10/0567; H01M10/0569; (IPC1-7): H01M6/16
Domestic Patent References:
| JP6430178A |
Attorney, Agent or Firm:
Takamori Suzuki (1 person outside)