Electrode tab, electrochemical device, and electric device
CN116235319BActive Publication Date: 2026-06-26NINGDE AMPEREX TECHNOLOGY LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NINGDE AMPEREX TECHNOLOGY LTD
- Filing Date
- 2022-08-23
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
In the prior art, the electrode sheets of secondary batteries are prone to cracking and bulging when the coating weight increases, which limits the thickness of the active material layer and the energy density of the secondary battery.
Method used
Adding amphiphilic compounds containing Si-OC bonds to the active material layer of the electrode sheet can improve the coating weight and uniformity of the active material layer, reduce the surface tension of the electrode slurry, and reduce cracking and bulging during the drying process.
Benefits of technology
It improves the energy density and productivity of the electrode sheets, ensuring that the secondary battery is not prone to cracking under high coating weight, and has high energy density and good cycle performance.
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Smart Images
Figure CN116235319B_ABST
Abstract
The application discloses an electrode tab, an electrochemical device and a power utilization device. The electrode tab comprises: a current collector; and an active material layer on at least one surface of the current collector, the active material layer comprising an active material and an amphiphilic additive, the amphiphilic additive comprising an amphiphilic compound comprising a Si-O-C bond. The application can improve the energy density and production capacity of a secondary battery.
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