Title:
非水電解質リチウム二次電池用正極の製造方法
Document Type and Number:
Japanese Patent JP6905671
Kind Code:
B2
Abstract:
To provide a method for manufacturing a positive electrode for a nonaqueous electrolyte lithium secondary battery, which is arranged to use polyvinylidene fluoride as a binding material, which can suppress the increase in viscosity with time for a positive electrode mixture material paste, and which allows a nonaqueous electrolyte lithium secondary battery to achieve a high low-temperature output.SOLUTION: A method for manufacturing a positive electrode for a nonaqueous electrolyte lithium secondary battery, which is disclosed herein, comprises the steps of: using a positive electrode active material, polyvinylidene fluoride, anhydrous acetic acid and a solvent to prepare a positive electrode mixture material paste; coating a positive electrode current collector with the positive electrode mixture material paste; and drying the coated positive electrode mixture material paste. The mass ratio of LiOH included in the positive electrode active material to the polyvinylidene fluoride is 0.040 or more and 0.075 or less. The amount of the anhydrous acetic acid to a total amount of solid components is 0.01 mass% or more and 0.2 mass% or less in preparing the positive electrode mixture material paste.SELECTED DRAWING: None
Inventors:
Hideki Hagiwara
Koji Takahata
Koji Takahata
Application Number:
JP2018053337A
Publication Date:
July 21, 2021
Filing Date:
March 20, 2018
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M4/139; H01M4/62
Domestic Patent References:
| JP1074521A | ||||
| JP201128898A | ||||
| JP2017530499A |
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Koji Amano
Michiko Oi
Koji Amano