Title:
リチウムイオン二次電池、その製造方法、及びリチウムイオン二次電池用正極
Document Type and Number:
Japanese Patent JP6849863
Kind Code:
B2
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
Kazunori Ozeki
Kazunori Ozeki
Application Number:
JP2020538153A
Publication Date:
March 31, 2021
Filing Date:
September 17, 2019
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
International Classes:
H01M4/13; H01M4/131; H01M4/139; H01M4/525; H01M4/62; H01M10/052; H01M10/0585
Domestic Patent References:
| JP2007273143A | ||||
| JP2009151959A | ||||
| JP2013196781A | ||||
| JP2006179205A | ||||
| JP2014127275A | ||||
| JP2009301765A |
Foreign References:
| WO2010024328A1 | ||||
| WO2005117169A1 |
Attorney, Agent or Firm:
Masahiro Taguchi
Shigeru Torayama
Shigeru Torayama