Title:
ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/093618
Kind Code:
A1
Abstract:
An electrochemical device (5) and an electronic device. The electrochemical device (5) comprises a positive electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer arranged on one side or two sides of the positive electrode current collector, the positive electrode active material layer comprising a positive electrode active material. The ratio of the Dv99 of the positive electrode active material to the thickness H1 of the single-sided positive electrode active material layer satisfies: 0.5≤Dv99/H1≤0.9. Agglomerated regions having a bright spot diameter D0 greater than or equal to 20 μm are observed on the surface of the positive electrode active material layer by means of a scanning electron microscope, and the number density of the agglomerated regions per unit area of the surface of the positive electrode active material layer is less than or equal to 5/cm2. The electrochemical device (5) has good high-temperature cycling performance.
Inventors:
CAI XIAOHU (CN)
Application Number:
PCT/CN2023/123525
Publication Date:
May 10, 2024
Filing Date:
October 09, 2023
Export Citation:
Assignee:
NINGDE AMPEREX TECHNOLOGY LTD (CN)
International Classes:
H01M4/131; H01M4/505; H01M4/525; H01M4/62; H01M10/0525
Foreign References:
| CN115472776A | 2022-12-13 | |||
| CN114614106A | 2022-06-10 | |||
| CN102255075A | 2011-11-23 | |||
| CN101765934A | 2010-06-30 | |||
| CN103326011A | 2013-09-25 | |||
| CN113097474A | 2021-07-09 | |||
| CN114551789A | 2022-05-27 | |||
| KR20180122238A | 2018-11-12 | |||
| US20200161650A1 | 2020-05-21 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
Download PDF: