一种集流体、包含该集流体的电化学装置及电子装置
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NINGDE AMPEREX TECHNOLOGY LTD
- Filing Date
- 2020-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
The energy density of existing lithium-ion batteries is limited by the capacity differences between individual batteries. The series connection method results in low overall energy density. Furthermore, the existing current collectors are expensive and have poor interface bonding, which affects cycle stability and manufacturing costs.
The current collector is composed of a polymer substrate and a conductive material. The electronic resistivity of the conductive material is 10 Ω·cm to 1000 Ω·cm in the XY plane and 0.01 Ω·cm to 30 Ω·cm in the Z direction. The conductive material accounts for 10% to 70% of the mass of the current collector, and the angle between the conductive material and the Z direction is 0° to 30°, thus achieving excellent electronic conductivity and current density uniformity.
It improves the energy density and cycle stability of lithium-ion batteries, reduces the proportion of inactive materials, lowers manufacturing costs, and enhances safety under mechanical abuse conditions, making it suitable for mass production.
Smart Images
Figure CN115336049B_ABST