IP Library › Granted Patent US 11,721,805
Granted Patent B2
US 11,721,805 · App. 17/002,304 · Granted Aug 8, 2023

Negative electrode active material containing silicon clathrate II

Inventors: Masanori Harata (Kariya, JP); Tatsuya Eguchi (Kariya, JP); Masakazu Murase (Kariya, JP); Jun Yoshida (Mishima, JP); Kazuhiro Suzuki (Hadano, JP); Daichi Kosaka (Toyota, JP); Shinji Nakanishi (Shizuoka-ken, JP)
Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI; TOYOTA JIDOSHA KABUSHIKI KAISHA
H01M4/386C01B33/02C22C24/00H01B1/04H01M4/381H01M10/0525C01P2002/54C01P2002/72C01P2006/14C01P2006/16C01P2006/40H01M2004/027
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Quick Facts
Patent No.
US 11,721,805
App. No.
17/002,304
Granted
Aug 8, 2023
Kind
B2
Abstract

Provided is a negative electrode active material that contains silicon clathrate II and that is suitable for a negative electrode of a lithium ion secondary battery. The negative electrode active material includes a silicon material in which silicon clathrate II represented by composition formula Na x Si 136 (0≤x≤10) is contained and a volume of a pore having a diameter of not greater than 100 nm is not less than 0.025 cm 3 /g.

Claims (3)

1. A negative electrode active material comprising a silicon material in which silicon clathrate II represented by composition formula Na x Si 136 (0≤x≤10) is contained and a volume of a pore having a diameter of not greater than 100 nm is not less than 0.025 cm 3 /g.

2. A negative electrode comprising the negative electrode active material according to claim 1 .

3. A lithium ion secondary battery comprising the negative electrode according to claim 2 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 26, 2020
From: HARATA, MASANORI; EGUCHI, TATSUYA; MURASE, MASAKAZU; YOSHIDA, JUN; SUZUKI, KAZUHIRO; KOSAKA, DAICHI; NAKANISHI, SHINJI
To: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI; TOYOTA JIDOSHA KABUSHIKI KAISHA
Reel/Frame 053598/0268 →
Priority Claims (1)
JP JP2019-154879 · Aug 27, 2019 · national
Continuity (1)
Related Publication 20210066713A1 · Mar 4, 2021
Cited By (1)
US 12,300,812