一种金属锂电池
By introducing a high-carbon-content lithium strip and a dual-functional layer structure into lithium metal batteries, the problems of lithium dendrite formation and electrode volume changes are solved, resulting in longer cycle life and easier-to-process lithium metal batteries, and improving battery safety and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA ENERGY LITHIUM
- Filing Date
- 2022-06-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lithium-ion batteries have insufficient energy density. The uneven deposition of lithium metal anodes on the electrode surface produces lithium dendrites, leading to internal short circuits and thermal runaway. Furthermore, the large volume variation of the electrodes limits their processing into electrode sheets and battery assembly.
The high-carbon-content lithium-ion negative electrode is used, and a bifunctional layer containing lithium-affinity carbon materials and oxidized lithium compounds is used to conduct lithium ions and isolate electrons. Combined with the encapsulation materials, the resulting lithium metal battery structure includes an inner composite layer, an outer shell layer, and an interstitial layer, which overcomes the problem of easy deformation of lithium metal.
It achieves longer cycle life and easier processing of lithium metal batteries, reduces the formation of lithium dendrites and electrode volume changes, and improves battery safety and stability.
Smart Images
Figure CN117352814B_ABST