Patent ID: 11961999
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC H

Claim 14:
15. A method for manufacturing a battery, the method comprising:
preparing a paint by mixing a positive electrode active material, a binder, and a conductive agent, and then adding a substituted barium titanate to the mixture, and
forming a positive electrode active material layer with use of the paint,
wherein the barium strontium calcium lead titanate is represented by a formula (1):

(Ba1-x-y-zPbxSryCaz)TiO3  (1)

wherein in the formula (1), x meets 0<x≤0.5, y meets 0<y≤0.2, and z meets 0<z≤0.2,
wherein an average particle size of the substituted barium titanate is 20 nm or more and not more than an average particle size of the positive electrode active material,
wherein the substituted barium titanate is provided in an entire of the positive electrode active material layer, and
wherein an impedance ratio (Z2/Z1) between an impedance Z1 of the battery at 30° C. and an impedance Z2 of the battery at 150° C. is 4 or more.