リチウムイオン二次電池 - 株式会社日立製作所

Title:

リチウムイオン二次電池

Document Type and Number:

Japanese Patent JP5279137

Kind Code:

B2

Abstract:

To provide a lithium ion secondary battery having a high output with superior reliability.

The lithium ion secondary battery is provided with a positive electrode containing as a positive electrode active material a lithium nickel compound oxide as expressed by a general formula: Li1-aNixMnyMzO2(in the formula, M is at least one kind of element selected from a group of Ti, Cr, Fe, Co, Cu, Zn, Al, Ge, Sn, Mg and Zr, and 0.4≤a≤0.6, x+y+z=1, x≥y>0, x≥z>0 ) when the potential of a negative electrode becomes 0.05 V, and a separator which contains heat resistant particulates as a main component and a heat resistant porous layer with a thickness of 3 μm or more and a resin film made of polyolefin, and the output density is 1,000 W/kg or more.

Inventors:

Hiroshi Nakajima
Yoshinobu Sato
Hideaki Katayama

Application Number:

JP2009253944A

Publication Date:

September 04, 2013

Filing Date:

November 05, 2009

Export Citation:

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Assignee:

株式会社日立製作所

International Classes:

H01M10/0525; H01M2/16; H01M4/131; H01M4/505; H01M4/525; H01M10/0566

Domestic Patent References:

JP11307094A
JP2004006264A
JP2005063674A
JP2006261059A
JP2006310302A
JP2007027100A
JP2007299569A
JP2009199929A

Attorney, Agent or Firm:

Tetsuo Miwa
Hideki Miwa

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