US 11,870,074 B2
Non-aqueous electrolyte secondary battery negative electrode and non-aqueous electrolyte secondary battery including same
Kiyoshi Tanaami, Saitama (JP); Makiko Takahashi, Saitama (JP); Tomohiro Kinoshita, Saitama (JP); Shintaro Aoyagi, Saitama (JP); Yuji Isogai, Saitama (JP); Takashi Mukai, Osaka (JP); Yuta Ikeuchi, Osaka (JP); Taichi Sakamoto, Osaka (JP); and Naoto Yamashita, Osaka (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jul. 6, 2021, as Appl. No. 17/368,764.
Claims priority of application No. 2020-118704 (JP), filed on Jul. 9, 2020.
Prior Publication US 2022/0013783 A1, Jan. 13, 2022
Int. Cl. H01M 4/62 (2006.01); H01M 4/134 (2010.01); H01M 4/139 (2010.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/621 (2013.01) [H01M 4/134 (2013.01); H01M 4/139 (2013.01); H01M 4/381 (2013.01); H01M 4/386 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A non-aqueous electrolyte secondary battery negative electrode, comprising:
a collector formed of a foamed metal body formed of Ni or a Ni alloy, and a negative electrode material disposed in pores of the foamed metal body,
wherein the foamed metal body has an average pore diameter of 500 μm or less and a porosity of 90 to 99%.
wherein the negative electrode material is a cured product of a composition comprising a negative electrode active material formed of a silicon-based material, a skeleton-forming agent comprising a silicate represented by the following formula (1), a conductivity aid, and a binder, and when the total solid content of the negative electrode active material, the skeleton-forming agent, the conductivity aid, and the binder is assumed to be 100% by mass, the content of the skeleton-forming agent is 3.0 to 40.0% by mass,
[Chem. 1]
A2O.nSiO2  formula (1)
wherein A represent K and n is 2.0 or more and 3.5 or less.