Title:
二次電池、及び該二次電池を備えた装置
Document Type and Number:
Japanese Patent JP7337267
Kind Code:
B2
Abstract:
This application provides a secondary battery and a device comprising the same. The secondary battery includes a negative electrode plate and an electrolyte. The negative electrode plate includes a negative electrode active material. The electrolyte includes an electrolyte salt, an organic solvent, and an additive. The negative electrode active material includes a silicon-based material.The organic solvent includes ethylene carbonate (EC) and diethyl carbonate (DEC). A mass ratio of EC in the organic solvent is less than or equal to 20%, and a mass ratio of DEC in the organic solvent is less than or equal to 20%. The additive includes an additive A and an additive B. The additive A is selected from one or more of compounds represented by Formula 1 or Formula 2, and the additive B is selected from one or more of compounds represented by Formula 3. The secondary battery and the device comprising the same according to this application achieve good high-temperature cycle performance, good high-temperature storage performance, and a low direct-current internal resistance while keeping a high energy density at the same time.
Inventors:
▲呉▼ ▲則▼利
▲韓▼ 昌▲隆▼
付 成▲華▼
▲韓▼ 昌▲隆▼
付 成▲華▼
Application Number:
JP2022520094A
Publication Date:
September 01, 2023
Filing Date:
December 24, 2019
Export Citation:
Assignee:
Contemporary Amperex Technology Co., Limited
International Classes:
H01M10/0567; H01M4/36; H01M4/38; H01M4/48; H01M4/505; H01M4/525; H01M4/58; H01M4/587; H01M10/052; H01M10/0568; H01M10/0569
Domestic Patent References:
| JP2013239443A |
Foreign References:
| CN109390628A | ||||
| CN108258315A | ||||
| WO2018164124A1 |
Attorney, Agent or Firm:
Takashi Minawa