The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2023
Filed:
Aug. 25, 2020
Kabushiki Kaisha Toyota Jidoshokki, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
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;
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
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 NaSi(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/g.