Title:
ELECTROCHEMICAL APPARATUS, MANUFACTURING METHOD THEREFOR, AND ELECTRONIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/060131
Kind Code:
A1
Abstract:
Provided in the present application are an electrochemical apparatus, a manufacturing method therefor, and an electronic apparatus. The electrochemical apparatus comprises an electrode assembly, the electrode assembly comprising a positive electrode sheet. The positive electrode sheet is of a single-surface slot position embedded tab structure, and the positive electrode sheet comprises a positive electrode current collector and a second positive electrode active material layer provided on a second surface of the positive electrode current collector. The second positive electrode active material layer comprises a second positive electrode active material, the second positive electrode active material comprising an element M, and the element M comprising at least one of manganese, iron, lanthanum, zirconium or yttrium. The positive electrode sheet of the present application can raise the energy density of electrochemical apparatuses on the basis of existing embedded tab structures. Meanwhile, the thermal stability of the second positive electrode active material can be improved by means of the element M, so that the positive electrode sheet aging problem caused by arranging the single-surface slot position embedded tab structure is solved, thereby further improving the safety performance of electrochemical apparatuses.
Inventors:
YAN DONGYANG (CN)
Application Number:
PCT/CN2022/120528
Publication Date:
March 28, 2024
Filing Date:
September 22, 2022
Export Citation:
Assignee:
NINGDE AMPEREX TECHNOLOGY LTD (CN)
International Classes:
H01M4/13; H01M10/0525
Foreign References:
| CN105261727A | 2016-01-20 | |||
| CN110265632A | 2019-09-20 | |||
| CN105576191A | 2016-05-11 | |||
| CN110265721A | 2019-09-20 | |||
| CN114365319A | 2022-04-15 | |||
| CN109920996A | 2019-06-21 | |||
| CN110729447A | 2020-01-24 |
Attorney, Agent or Firm:
PATENTSINO IP FIRM (CN)
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