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:
Jul. 16, 2019
Filed:
Mar. 03, 2017
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Hiromichi Kuriyama, Yokkaichi, JP;
Hidesato Saruwatari, Kawasaki, JP;
Hideki Satake, Kashiwazaki, JP;
Dai Yamamoto, Kashiwazaki, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
According to an embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte includes a negative electrode, a positive electrode and a nonaqueous electrolyte. The negative electrode includes negative electrode active material particles. The negative electrode active material particles include a spinel-type lithium titanate. The negative electrode has such a surface state that a ratio A/Aof an Li atom abundance ratio Ato a Ti atom abundance ratio A, according to a photoelectron spectroscopic measurement for a surface, is increased at a rate of 0.002 to 0.02 per cycle in a charge-and-discharge cycle test under the predetermined condition.