Title:
LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2012/014998
Kind Code:
A1
Abstract:
The lithium secondary battery of the present invention is provided with a positive electrode, a negative electrode, a nonaqueous electrolyte, and a separator, and is characterized by: the positive electrode including a current collector and a positive electrode mixture layer formed on top of the current collector; the positive electrode mixture layer including a positive electrode active material; the positive electrode active material including a lithium-containing complex oxide containing lithium and nickel; the molar ratio of lithium to nickel in the total volume of the lithium-containing complex oxide being 0.5-1.05%; and the nonaqueous electrolyte including 0.5-20% by weight of a phosphonoacetate compound represented in Formula (1). In Formula (1), R1, R2 and R3 all independently represent C1-12 alkyl groups that can be substituted with halogen atoms, and n represents an integer of 0 to 6.
Inventors:
KAMIZORI Haruki (())
上剃春樹 (())
GOSHO Itaru (())
御書至 (())
MATSUO Kazutaka (())
松尾和貴 (())
KAWABATA Yusuke (())
川端雄介 (())
NAGAOKA Shuichi (())
上剃春樹 (())
GOSHO Itaru (())
御書至 (())
MATSUO Kazutaka (())
松尾和貴 (())
KAWABATA Yusuke (())
川端雄介 (())
NAGAOKA Shuichi (())
Application Number:
JP2011/067328
Publication Date:
February 02, 2012
Filing Date:
July 28, 2011
Export Citation:
Assignee:
HITACHI MAXELL ENERGY, LTD. (1 Koizumi, Oyamazaki-cho Otokuni-gun Kyoto, 25, 〒6188525, JP)
日立マクセルエナジー株式会社 (〒25 京都府乙訓郡大山崎町小泉１番地 Kyoto, 〒6188525, JP)
KAMIZORI Haruki (())
上剃春樹 (())
GOSHO Itaru (())
御書至 (())
MATSUO Kazutaka (())
松尾和貴 (())
KAWABATA Yusuke (())
川端雄介 (())
日立マクセルエナジー株式会社 (〒25 京都府乙訓郡大山崎町小泉１番地 Kyoto, 〒6188525, JP)
KAMIZORI Haruki (())
上剃春樹 (())
GOSHO Itaru (())
御書至 (())
MATSUO Kazutaka (())
松尾和貴 (())
KAWABATA Yusuke (())
川端雄介 (())
International Classes:
H01M10/052; H01M4/13; H01M4/131; H01M4/133; H01M4/36; H01M4/48; H01M4/505; H01M4/525; H01M4/587; H01M10/0567
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (26th Floor, OAP TOWER 8-30, Tenmabashi 1-chome, Kita-ku, Osaka-sh, Osaka 26, 〒5306026, JP)
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Claims: