Title:
ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/184072
Kind Code:
A1
Abstract:
An electrochemical device and an electronic device. A positive electrode of the electrochemical device comprises a positive electrode current collector and a positive electrode active material layer, which is located on one side or two sides of the positive electrode current collector, wherein the positive electrode active material layer comprises a positive electrode material, the positive electrode material comprising lithium manganate and lithium iron phosphate. Based on the total mass of the positive electrode material, the mass percentage content a of lithium iron phosphate satisfies: 5 wt%≤a≤20 wt%; the Dv50 of lithium iron phosphate is 0.8 μm to 2.0 μm; the Dn10 of lithium iron phosphate is 0.2 μm to 0.5 μm; and the specific surface area of lithium iron phosphate is not less than 5 m2/g. By reasonably controlling the mass content, the particle size and the specific surface area of lithium iron phosphate, the problems of floating of lithium iron phosphate and drying and cracking of the electrode plate are solved in addition to improving the safety of the electrochemical device.
Inventors:
HAN XIANGLONG (CN)
Application Number:
PCT/CN2022/083307
Publication Date:
October 05, 2023
Filing Date:
March 28, 2022
Export Citation:
Assignee:
DONGGUAN POWERAMP TECH LIMITED (CN)
International Classes:
H01M4/505; H01M4/58; H01M10/0525
Foreign References:
| JP2007103339A | 2007-04-19 | |||
| CN114069054A | 2022-02-18 | |||
| CN107742709A | 2018-02-27 | |||
| CN104253270A | 2014-12-31 | |||
| CN101916848A | 2010-12-15 | |||
| CN108281610A | 2018-07-13 |
Attorney, Agent or Firm:
EAST & CONCORD PARTNERS et al. (CN)
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