Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2014/103755
Kind Code:
A1
Abstract:
This nonaqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator, and is characterized in that: the positive electrode comprises a collector and a positive electrode mixture layer that is formed on the collector; the positive electrode mixture layer contains a positive electrode active material and a binder; the positive electrode active material contains a lithium/nickel-containing composite oxide that contains nickel and cobalt and/or manganese; the lithium/nickel-containing composite oxide has a nickel ratio of 30 mol% or more when the amount of elements other than lithium and oxygen is taken as 100 mol%; the binder contains a vinylidene fluoride-chlorotrifluoroethylene copolymer; a heat-resistant fine particle layer, which contains heat-resistant fine inorganic particles and a binder, is arranged between the positive electrode and the negative electrode; and the upper limit voltage for charging is set to 4.3 V or more.
Inventors:
TAKEI YUUKI
YAMADA MASAYUKI
GOSHO ITARU
MITANI KATSUYA
KONO SATOSHI
YAMADA MASAYUKI
GOSHO ITARU
MITANI KATSUYA
KONO SATOSHI
Application Number:
PCT/JP2013/083502
Publication Date:
July 03, 2014
Filing Date:
December 13, 2013
Export Citation:
Assignee:
HITACHI MAXELL (JP)
International Classes:
H01M4/525; H01M2/16; H01M4/131; H01M4/36; H01M4/505; H01M4/62
Foreign References:
| JP2011124086A | 2011-06-23 | |||
| JP2011138780A | 2011-07-14 | |||
| JP2011138621A | 2011-07-14 | |||
| JP2011023335A | 2011-02-03 | |||
| JP2009123465A | 2009-06-04 | |||
| JP2009087889A | 2009-04-23 |
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (JP)
Patent business corporation Ikeuchi and Sato and partners (JP)
Patent business corporation Ikeuchi and Sato and partners (JP)
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