US 12,155,065 B2
Negative electrode material for lithium-ion secondary battery and use thereof
Takayuki Kurita, Tokyo (JP); Yuji Ito, Tokyo (JP); and Hirofumi Inoue, Tokyo (JP)
Assigned to Group14 Technologies, Inc., Woodinville, WA (US)
Appl. No. 17/927,591
Filed by Group14 Technologies, Inc., Woodinville, WA (US)
PCT Filed May 28, 2021, PCT No. PCT/JP2021/020497
§ 371(c)(1), (2) Date Nov. 23, 2022,
PCT Pub. No. WO2021/241748, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 2020-093159 (JP), filed on May 28, 2020; application No. 2021-005094 (JP), filed on Jan. 15, 2021; and application No. 2021-005095 (JP), filed on Jan. 15, 2021.
Prior Publication US 2023/0207780 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/36 (2006.01); C01B 32/318 (2017.01); C01B 32/336 (2017.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [C01B 32/318 (2017.08); C01B 32/336 (2017.08); H01M 4/0404 (2013.01); H01M 4/133 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 4/587 (2013.01); H01M 4/622 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); C01P 2002/74 (2013.01); C01P 2002/82 (2013.01); C01P 2004/03 (2013.01); C01P 2004/32 (2013.01); C01P 2004/54 (2013.01); C01P 2004/61 (2013.01); C01P 2004/80 (2013.01); C01P 2006/12 (2013.01); C01P 2006/16 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A negative electrode material for a lithium-ion secondary battery comprising a composite (C), the composite (C) comprising a porous carbon (A) and a Si-containing compound (B), wherein the porous carbon (A) and the Si-containing compound (B) are as follows:
wherein the porous carbon (A) satisfies V1/V0>0.80, V2/V0<0.10, and V3/V0>0.50,
when a total pore volume at a maximum value of a relative pressure P/P0 is defined as V0 and P0 is a saturated vapor pressure,
a cumulative pore volume at a relative pressure P/P0=0.1 is defined as V1, and
a cumulative pore volume at a relative pressure P/P0=10−7 is defined as V2,
a cumulative pore volume at a relative pressure P/P0=10−2 is defined as V3 in the nitrogen adsorption test,
and has a BET specific surface area of 800 m2/g or more; and
wherein the Si-containing compound (B) is contained in pores of the porous carbon (A).