Polymer current collector, preparation method thereof, and secondary battery, battery module, battery pack, and apparatus associated therewith
US11831024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2022 |
| Grant date | Nov 28, 2023 |
| Priority date | — |
| Expiry date | Jul 5, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This application provides a polymer current collector, a preparation method thereof, and a secondary battery, battery module, battery pack, and apparatus associated therewith. The polymer current collector provided in this application includes polymer film layers, where the polymer film layers include a first polymer film layer and a second polymer film layer, a resistivity of the first polymer film layer is denoted as ρ1, a resistivity of the second polymer film layer is denoted as ρ2, and the current collector satisfies ρ1>ρ2. The polymer current collector in this application can induce to deposit of lithium metal from a low conductivity side to a high conductivity side, avoiding risks of depositing lithium ions on the surface of the current collector and thereby increasing cycle life of lithium metal batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.