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:
Jan. 26, 2021
Filed:
Dec. 10, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Kenta Ishii, Seto, JP;
Masaki Kato, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In the nonaqueous electrolyte secondary cell disclosed herein, a negative electrode SEI filmincluding a LiBOB skeleton and a fluorosulfonic acid skeleton is formed, and a positive electrode SEI filmincluding a phosphoric acid skeleton is formed. Where the component amount of the LiBOB skeleton is denoted fey I, the component amount of the fluorosulfonic acid skeleton is demoted by I, and the component amount of the phosphoric acid skeleton is denoted by I, a formula of 4≤I/I≤10 and a formula of 5 μmol/m≤I≤15 μmol/mare satisfied. Furthermore, the total amount of lithium phosphate relative to a BET specific surface area of the negative electrode active material, is 0.6 mol/mto 1.0 mol/m, and the component amount Iof the fluorosulfonic acid skeleton is 0.6 μmol/mto 1.0 μmol/m.