	US 11,876,216 B2
	Electrode mixture, battery, and method for producing electrode
Ryo Sugawara, Hyogo (JP); and Takashi Kouzaki, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on May 13, 2022, as Appl. No. 17/744,202.
Application 17/744,202 is a continuation of application No. 16/245,386, filed on Jan. 11, 2019, abandoned.
Claims priority of application No. 2018-015192 (JP), filed on Jan. 31, 2018.
Prior Publication US 2022/0278313 A1, Sep. 1, 2022
Int. Cl. H01M 4/36 (2006.01); H01M 4/04 (2006.01); H01M 4/131 (2010.01); H01M 4/139 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/0562 (2010.01); H01M 4/1391 (2010.01); H01M 4/13 (2010.01); H01M 4/525 (2010.01); H01M 10/052 (2010.01)

CPC H01M 4/364 (2013.01) [H01M 4/0404 (2013.01); H01M 4/0409 (2013.01); H01M 4/13 (2013.01); H01M 4/131 (2013.01); H01M 4/139 (2013.01); H01M 4/1391 (2013.01); H01M 4/366 (2013.01); H01M 4/525 (2013.01); H01M 4/621 (2013.01); H01M 4/622 (2013.01); H01M 10/0525 (2013.01); H01M 10/0562 (2013.01); H01M 10/052 (2013.01); H01M 2300/0068 (2013.01)]

6 Claims

1. A method for producing an electrode, the method comprising:

preparing a slurry including a sulfide solid electrolyte, an electrode active material, a carbon-containing material, and a solvent, by

stirring a first mixture including the sulfide solid electrolyte, the carbon-containing material, and the solvent, using an ultrasound homogenizer,

adding the electrode active material to the first mixture to prepare a second mixture, and

stirring the second mixture;

applying the slurry to a current collector to form a coating film on the current collector; and

removing the solvent from the coating film to form an electrode mixture layer,

[wherein the slurry is prepared by stirring a first mixture including the sulfide solid electrolyte, the carbon-containing material, and the solvent, using an ultrasound homogenizer, adding the electrode active material to the first mixture to prepare a second mixture, and stirring the second mixture,] and

wherein an intensity ratio C/S determined from a spectrum obtained by analyzing the electrode mixture layered by Auger electron spectroscopy satisfies 0.2≤C/S≤1, where C is an intensity of a first peak in the spectrum, the first peak corresponding to carbon included in the carbon-containing material, and S is an intensity of a second peak in the spectrum, the second peak corresponding to sulfur including in the sulfide solid electrolyte.