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:
May. 27, 2025
Filed:
Feb. 27, 2020
Tdk Corporation, Tokyo, JP;
Teiichi Tanaka, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
An all-solid-state battery includes: a positive electrode collector layer; positive electrode active material layer; solid electrolyte layer; negative electrode active material layer; and a negative electrode collector layer, wherein the positive and negative electrode active material layer contains a positive and negative electrode active material respectively, and the negative electrode active material contains a compound represented by the following general Expression (I): Lia1Vb1Tic1Ald1(PO4)3 (where, in Expression (I), a1, b1, c1, and d1 indicate numbers in which they satisfy 2.8≤a1<5, 0.6≤b1≤2, 0.1≤c1≤1.4, 0≤d1≤0.7, and 1.9≤b1+c1+d1≤2.1); a relationship between a volume CV of positive electrode active material contained in its active material layer and a volume AV of the negative electrode active material contained its active material layer satisfies the following Expression (1): 0.7≤CV/AV≤3; and a thickness of the negative electrode active material layer falls within a range of 2 μm or more and 100 μm or less.