Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP3546566
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the initial capacity and cyclic characteristics of a secondary battery by using a certain quantity of specific sulfite and a requisite carbonate as a non-aqueous solvent to form a non-aqueous electrolyte.
SOLUTION: A secondary battery concerned with a non-aqueous electrolyte is composed of a negative electrode prepared through lithium doping/dedoping from a carbonic material having a plane spacing of 0.340nm or less, a positive electrode consisting of composite oxides containing lithium and one or more transfer metals, and a non-aqueous electrolyte. The solvent of this non-aqueous electrolyte is prepared as a mixture of ethylene carbonate and 0.05-10vol.% glycol sulfite of structure according to the given expression, and thereby a non-aqueous electrolyte secondary battery equipped with an enhanced initial capacity and cyclic characteristics is obtained.
Inventors:
Yoshiaki Naruse
Shigeru Fujita
Atsuo Komaru
Shigeru Fujita
Atsuo Komaru
Application Number:
JP28067995A
Publication Date:
July 28, 2004
Filing Date:
October 27, 1995
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H01M10/05; H01M4/131; H01M4/133; H01M4/587; H01M10/0569; (IPC1-7): H01M10/40
Domestic Patent References:
| JP7122295A | ||||
| JP8096851A | ||||
| JP6302336A | ||||
| JP6310172A | ||||
| JP3214566A | ||||
| JP7235309A | ||||
| JP3152879A | ||||
| JP2312159A |
Attorney, Agent or Firm:
Akira Koike
Eiichi Tamura
Seiji Iga
Eiichi Tamura
Seiji Iga