Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP3169102
Kind Code:
B2
Abstract:
PURPOSE: To provide a nonaqueous electrolyte secondary battery with high voltage, high energy density, high charge/discharge performance, and long cycle life.
CONSTITUTION: In a nonaqueous electrolyte secondary battery at least comprising a negative electrode, a positive electrode, and a lithium ion conductive nonaqueous electrolyte, a lithium-containing vanadium composite oxide represented by LixMyVzO2 (wherein x>0, M is an element 13th group or 14th group in the periodic table revised in 1989, based on the inorganic chemistry normenclature of IUPAC, y≥0, and 0.7≤y+z≤1.3.) is used as a negative active material. The secondary battery with low, less-noble negative active material potential, high charge/discharge capacity of the negative active material in the less-noble potential region vs. lithium reference electrode, high voltage, high energy density, high current charge/discharge performance, high overcharge/ overdischarge resistance, and long cycle life can be obtained.
Inventors:
Fumiharu Iwasaki
Kensuke Tahara
Hideki Ishikawa
Akifumi Sakata
Seiji Yahagi
Kensuke Tahara
Hideki Ishikawa
Akifumi Sakata
Seiji Yahagi
Application Number:
JP8766193A
Publication Date:
May 21, 2001
Filing Date:
April 14, 1993
Export Citation:
Assignee:
Seiko Instruments Inc.
SII Micro Parts Co., Ltd.
SII Micro Parts Co., Ltd.
International Classes:
H01M10/05; H01M4/485; (IPC1-7): H01M4/58; H01M10/40
Domestic Patent References:
| JP660867A | ||||
| JP644972A | ||||
| JP6275265A |
Attorney, Agent or Firm:
Keinosuke Hayashi