US 12,107,212 B2
Negative electrode composition, negative electrode sheet for all-solid state secondary battery, all-solid state secondary battery, method for manufacturing negative electrode sheet for all-solid state secondary battery, and method for manufacturing all-solid state secondary battery
Toshihiko Yawata, Kanagawa (JP); Shin Ozawa, Kanagawa (JP); Hideyuki Suzuki, Kanagawa (JP); and Hiroshi Isojima, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Feb. 24, 2021, as Appl. No. 17/183,365.
Application 17/183,365 is a continuation of application No. PCT/JP2019/037251, filed on Sep. 24, 2019.
Claims priority of application No. 2018-184891 (JP), filed on Sep. 28, 2018.
Prior Publication US 2021/0184252 A1, Jun. 17, 2021
Int. Cl. H01M 10/0562 (2010.01); H01M 4/02 (2006.01); H01M 4/136 (2010.01); H01M 4/1397 (2010.01)
CPC H01M 10/0562 (2013.01) [H01M 4/136 (2013.01); H01M 4/1397 (2013.01); H01M 2004/027 (2013.01); H01M 2300/0068 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A negative electrode active material layer formed of a negative electrode composition, wherein the negative electrode composition comprises:
a sulfide-based inorganic solid electrolyte;
a negative electrode active material containing a silicon atom or a tin atom; and
a polymer,
wherein the polymer has substantially no adsorption capacity to the negative electrode active material and the sulfide-based inorganic solid electrolyte, and a modulus of elasticity of the polymer measured in accordance with JIS K 7161 (2014) is 100 MPa or higher and 1000 MPa or lower, and
the polymer is contained in the negative electrode active material layer in a particle form,
and wherein a content of the polymer in a total solid component is 5% to 20% by mass.