Title:
ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/205661
Kind Code:
A1
Abstract:
The present application provides an electrochemical apparatus and an electronic apparatus. The electrochemical apparatus comprises: a positive electrode, a negative electrode, a diaphragm, and an electrolyte; and the electrolyte comprises a compound represented by formula I. The compound represented by formula I accounts for A% of the total mass of the electrolyte, A being 0.3 to 40; R1 and R2 are each selected from among hydrogen, halogen, alkyl with 1 to 5 carbon atoms, alkyl with 1 to 5 carbon atoms substituted by halogen, alkenyl with 1 to 5 carbon atoms, or alkenyl with 1 to 5 carbon atoms substituted by halogen; at least one among R1 and R2 contains halogen. The positive electrode comprises a positive electrode current collector and a positive electrode active material layer disposed on at least one surface of the positive electrode current collector, and the positive electrode current collector has a tensile strength of B MPa and 2 ≤ B/A ≤ 750. According to the present application, the cyclic performance and over-discharge storage performance of the electrochemical apparatus can be improved, and better safety performance is maintained after a long cycle.
Inventors:
ZHANG LILAN (CN)
ZHANG SHUIRONG (CN)
TANG CHAO (CN)
ZHANG SHUIRONG (CN)
TANG CHAO (CN)
Application Number:
PCT/CN2021/104955
Publication Date:
October 06, 2022
Filing Date:
July 07, 2021
Export Citation:
Assignee:
NINGDE AMPEREX TECHNOLOGY LTD (CN)
International Classes:
H01M10/0525; H01M4/13; H01M10/0567
Foreign References:
| CN111344886A | 2020-06-26 | |||
| CN112151749A | 2020-12-29 | |||
| CN105359301A | 2016-02-24 | |||
| CN101834309A | 2010-09-15 | |||
| CN1825667A | 2006-08-30 |
Attorney, Agent or Firm:
EAST & CONCORD PARTNERS (CN)
Download PDF: