Title:
LITHIUM-ION SECONDARY CELL, METHOD FOR MANUFACTURING SAME, AND POSITIVE ELECTRODE FOR LITHIUM-ION SECONDARY CELL
Document Type and Number:
WIPO Patent Application WO/2020/059711
Kind Code:
A1
Abstract:
A lithium-ion secondary cell provided with a positive electrode and a negative electrode, wherein: the positive electrode is provided with a positive electrode active material layer and an insulation layer provided on the surface of the positive electrode active material layer; the insulation layer is disposed so as to be in contact with the negative electrode; the surface of the positive electrode active material layer on which the insulation layer is provided has a surface roughness Ra of 0.5-2.0 μm; the positive electrode active material layer has a density of 3.0-4.0 g/cc; and the insulation layer has a thickness of 10-30 μm.
Inventors:
OKUDA KANTA (JP)
KOSEKI KAZUNORI (JP)
KOSEKI KAZUNORI (JP)
Application Number:
PCT/JP2019/036375
Publication Date:
March 26, 2020
Filing Date:
September 17, 2019
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
H01M4/13; C01G53/00; H01M4/131; H01M4/525; H01M10/052; H01M10/0585
Domestic Patent References:
| WO2010024328A1 | 2010-03-04 | |||
| WO2005117169A1 | 2005-12-08 |
Foreign References:
| JP2009151959A | 2009-07-09 | |||
| JP2013196781A | 2013-09-30 | |||
| JP2006179205A | 2006-07-06 | |||
| JP2014127275A | 2014-07-07 | |||
| JP2009301765A | 2009-12-24 |
Attorney, Agent or Firm:
TAGUCHI, Masahiro et al. (JP)
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