Title:
ELECTROCHEMICAL DEVICE, AND ELECTRONIC DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/184071
Kind Code:
A1
Abstract:
The present application relates to an electrochemical device, and an electronic device comprising same. The electrochemical device comprises a positive electrode and an electrolyte, wherein the electrolyte comprises ethylene carbonate (EC), propylene carbonate (PC) and succinonitrile (SN); the positive electrode comprises a positive electrode active material, the positive electrode active material comprising a metal element A. The metal element A is at least one of the following elements: Mg, Zr or Al. Based on the mass of the electrolyte, the mass content of the SN is a%; the mass content of the EC is b%; and the mass content of the PC is c%, where k=b/c, 1.25≤k≤6 and a/k≥0.2. Based on the mass of the positive electrode active material, the mass content of the metal element A is x%, where 0.01≤x≤1. The electrochemical device shows good high-temperature cycle performance and high-temperature interval cycle performance.
Inventors:
CUI HUI (CN)
LIU JUNFEI (CN)
TANG CHAO (CN)
HAN JUNQIANG (CN)
LIU JUNFEI (CN)
TANG CHAO (CN)
HAN JUNQIANG (CN)
Application Number:
PCT/CN2022/083300
Publication Date:
October 05, 2023
Filing Date:
March 28, 2022
Export Citation:
Assignee:
NINGDE AMPEREX TECHNOLOGY LTD (CN)
International Classes:
H01M4/525; H01M10/0567
Foreign References:
| CN109935891A | 2019-06-25 | |||
| CN112993379A | 2021-06-18 | |||
| CN110391414A | 2019-10-29 | |||
| CN111129590A | 2020-05-08 | |||
| US20190074538A1 | 2019-03-07 | |||
| CN111640986A | 2020-09-08 |
Attorney, Agent or Firm:
LEE AND LI - LEAVEN IPR AGENCY LTD. (CN)
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