|
| Composite copper foil current collector of lithium ion batteryand preparation method |
|
Received:June 08, 2024
Revised:July 05, 2024
Accepted:July 09, 2024
Published Online:March 24, 2025
|
| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:lithium-ion battery; composite copper foil; current collector; energy density; copper plating |
| Author | Institution |
| DUN Xueyang |
State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing |
| XIE Jiajun |
State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing |
| WANG Mingyong |
State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing |
|
| Hits: 739 |
| Download times: 244 |
| Abstract: |
| As an important material to collect current and support active substances for lithium-ion batteries, current collector plays an important role in the development of high-performance lithium-ion batteries. Compared with traditional copper foil, composite copper foil is a new type of negative collector. The unique "Cu-polymer-Cu" sandwich structure can significantly reduce the weight of the collector and increase the energy density of the battery. At the same time, the insulated and flexible polymer interlayer can block the transverse migration of electrons, alleviate the expansion stress caused by the negative lithium insertion during the charging process. Therefore, it will improve the safety and cycle performance of the battery. The types of intermediate layers of composite copper foil are introduced, the advantages of composite copper foil as a negative collector are reviewed, and the typical preparation methods of composite copper foil, such as magnetron sputtering, vacuum evaporation, electroless plating and water electroplating, are summarized. |
| Close |
|
|
|