LITHIUM-ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING LITHIUM-ION SECONDARY BATTERY

WIPO Patent Application WO/2020/070932

A1

A lithium-ion secondary battery (1) consists of layers in the following order: a substrate (10) that serves as a positive electrode current collector layer; an underlayer (20); a positive electrode layer (30) containing a positive electrode active material; a solid electrolyte layer (40) containing an inorganic solid electrolyte; a retaining layer 50 composed of a noble metal or the like; a diffusion prevention layer (60) composed of an amorphous alloy; and a negative electrode current collector layer (70) composed of a noble metal. A surface (10a) of the substrate (10) for laminating the underlayer (20) through to the negative electrode current collector layer (70) has a maximum-minimum height difference, which is the height difference between the maximum height and the minimum height obtained by measuring unevenness in a range of 20 μm × 20 μm by Atomic Force Microscope (AFM), that is established at 78 nm or less. Thus, in a thin-film laminated lithium-ion secondary battery equipped with an inorganic solid electrolyte, a reduction in the capacity retention rate is suppressed.

YASUDA TAKAKI (JP)
SAKAWAKI AKIRA (JP)
WATANABE YASUMASA (JP)

PCT/JP2019/026267

April 09, 2020

July 02, 2019

Click for automatic bibliography generation  

SHOWA DENKO KK (JP)

H01M10/0562; H01M4/13; H01M4/62; H01M4/66; H01M4/70; H01M10/052; H01M10/058

JP2018029046A	2018-02-22
JP2016225281A	2016-12-28
JP2016115617A	2016-06-23
JP2012256581A	2012-12-27
JPH07267800A	1995-10-17
JPH08274195A	1996-10-18
JP2004063419A	2004-02-26
JP2016213124A	2016-12-15
JP2018129159A	2018-08-16

"RECHARGEABLE LITHIUM BATTERIES. 1st ed.", August 2010, OHMSHA, LTD., pages: 132 - 133

FURUBE, Jiro et al. (JP)

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