US 11,715,822 B2
Negative electrode active material for non-aqueous electrolyte secondary cell, and non-aqueous electrolyte secondary cell
Norihisa Yamamoto, Osaka (JP); Yohei Uchiyama, Hyogo (JP); Tatsuya Akira, Osaka (JP); and Kazuro Hayashida, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 16/650,236
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Sep. 26, 2018, PCT No. PCT/JP2018/035762
§ 371(c)(1), (2) Date Mar. 24, 2020,
PCT Pub. No. WO2019/065766, PCT Pub. Date Apr. 4, 2019.
Claims priority of application No. 2017-190855 (JP), filed on Sep. 29, 2017.
Prior Publication US 2021/0202930 A1, Jul. 1, 2021
Int. Cl. H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 4/134 (2010.01); H01M 4/136 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [H01M 4/134 (2013.01); H01M 4/136 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/5825 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A negative electrode active material for a non-aqueous electrolyte secondary battery, comprising base particles,
each of the base particles comprising: a silicate phase including Li, Si, MX, wherein MX is one or more elements other than an alkali metal, an alkaline earth metal, and Si and is selected from the group consisting of B, Bi, Sb, Ge, Zr, P, V, W and La,
wherein, in the silicate phase, a Li content is 3 to 45 mol %, a Si content is 40 to 78 mol %, and an MX content is 1 to 40 mol %, each based on the total amount of elements in the silicate phase other than oxygen.