Title:
NONAQUEOUS ELECTROLYTIC LIQUIDS AND LITHIUM SECONDARY BATTERY EMPLOYING THE SAME
Document Type and Number:
WIPO Patent Application WO/2002/056408
Kind Code:
A1
Abstract:
Nonaqueous electrolytic liquids for lithium secondary batteries which have flame retardancy (self-extinguishing characteristics) or incombustibility (no flash point), have a high conductivity, and are electrochemically stable. One of the nonaqueous electrolytic liquids comprises a nonaqueous solvent comprising as an essential ingredient at least one phosphate (a) selected among chain phosphoric esters (a1) and cyclic phosphoric esters (a2). The nonaqueous solvent may further contain a cyclic carboxylic ester (b1) and a cyclic carbonic ester (b2). Another nonaqueous electrolytic liquid comprises the nonaqueous solvent and incorporated therein at least either a vinylene carbonate compound (c1) or a vinylethylene carbonate compound (c2) and one or more compounds selected from the group consisting of cyclic amide compounds (d1), cyclic carbamate compounds (d2), and cyclic hetero-compounds (d3).
Inventors:
YASUKAWA EIKI (JP)
SHIMA KUNIHISA (JP)
KOMINATO ASAO (JP)
ISHIGAKI KEN-ICHI (JP)
WANG XIANMING (JP)
FUJII TAKASHI (JP)
KOTATO MINORU (JP)
SHIGEMATSU YASUYUKI (JP)
FUSE TOORU (JP)
SATOU HIDEHARU (JP)
SHIMA KUNIHISA (JP)
KOMINATO ASAO (JP)
ISHIGAKI KEN-ICHI (JP)
WANG XIANMING (JP)
FUJII TAKASHI (JP)
KOTATO MINORU (JP)
SHIGEMATSU YASUYUKI (JP)
FUSE TOORU (JP)
SATOU HIDEHARU (JP)
Application Number:
PCT/JP2001/011630
Publication Date:
July 18, 2002
Filing Date:
December 28, 2001
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
YASUKAWA EIKI (JP)
SHIMA KUNIHISA (JP)
KOMINATO ASAO (JP)
ISHIGAKI KEN-ICHI (JP)
WANG XIANMING (JP)
FUJII TAKASHI (JP)
KOTATO MINORU (JP)
SHIGEMATSU YASUYUKI (JP)
FUSE TOORU (JP)
SATOU HIDEHARU (JP)
YASUKAWA EIKI (JP)
SHIMA KUNIHISA (JP)
KOMINATO ASAO (JP)
ISHIGAKI KEN-ICHI (JP)
WANG XIANMING (JP)
FUJII TAKASHI (JP)
KOTATO MINORU (JP)
SHIGEMATSU YASUYUKI (JP)
FUSE TOORU (JP)
SATOU HIDEHARU (JP)
International Classes:
H01M4/133; H01M4/58; H01M4/587; H01M10/0525; H01M10/0569; H01M10/36; H01M4/02; H01M4/36; H01M6/16; (IPC1-7): H01M10/40; H01M4/02; H01M4/58
Foreign References:
| JPH11273727A | 1999-10-08 | |||
| JPH11260401A | 1999-09-24 | |||
| JP2000340232A | 2000-12-08 | |||
| JPH06318459A | 1994-11-15 | |||
| JP2000149985A | 2000-05-30 |
Other References:
See also references of EP 1357628A4
Attorney, Agent or Firm:
Tsukuni, Hajime (Toranomon 1-chome Minato-ku, Tokyo, JP)
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