Title:
LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2014/168019
Kind Code:
A1
Abstract:
Provided is an excellently safe lithium ion secondary battery which is capable of achieving high energy density and high power density at low cost without using a polymer separator such as a porous polyolefin separator.
An electrode smoothing layer (12) that is formed of a composite material containing an active material and an organic material is provided on the surface of a positive electrode (1) and/or a negative electrode (2), and a lithium ion-permeable ceramic separator layer (11) that is formed of a composite material containing insulating inorganic fine particles and an organic material is arranged so as to face the positive electrode and/or the negative electrode with the electrode smoothing layer (12) therebetween.
Alternatively, an electrode smoothing layer is provided on both the surface of a positive electrode and the surface of a negative electrode, and a ceramic separator layer is arranged between the electrode smoothing layer provided on the surface of the positive electrode and the electrode smoothing layer provided on the surface of the negative electrode.
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Inventors:
TANAKA YOSUKE (JP)
SAWADA MANABU (JP)
UEBA YUSUKE (JP)
SAWADA MANABU (JP)
UEBA YUSUKE (JP)
Application Number:
PCT/JP2014/058937
Publication Date:
October 16, 2014
Filing Date:
March 27, 2014
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M4/13; H01M2/16; H01M10/0525; H01M10/058
Domestic Patent References:
| WO2009087791A1 | 2009-07-16 | |||
| WO2010089898A1 | 2010-08-12 |
Foreign References:
| JP2013030275A | 2013-02-07 | |||
| JP2011192395A | 2011-09-29 | |||
| JPH06203819A | 1994-07-22 |
Attorney, Agent or Firm:
NISHIZAWA, HITOSHI (JP)
Hitoshi Nishizawa (JP)
Hitoshi Nishizawa (JP)
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