Title:
非水電解質二次電池
Document Type and Number:
Japanese Patent JP7136017
Kind Code:
B2
Abstract:
To provide a non-aqueous electrolyte secondary battery suitable for external charging of an EV.SOLUTION: A negative electrode active material layer 22 includes a first layer 1 and a second layer 2. The first layer 1 is arranged between a positive electrode 10 and the second layer 2. The ratio of the porosity of the first layer 1 to the porosity of the second layer 2 is greater than 1. The ratio of the BET specific surface area of the negative electrode active material contained in the first layer 1 to the BET specific surface area of the negative electrode active material contained in the second layer 2 is smaller than 1.SELECTED DRAWING: Figure 3
Inventors:
Tsujiko Sunday
Hiroki Iguchi
Hiroki Iguchi
Application Number:
JP2019117583A
Publication Date:
September 13, 2022
Filing Date:
June 25, 2019
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M4/13
Domestic Patent References:
| JP2015511389A | ||||
| JP2015146272A |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office