Lithium-copper composite negative electrode prepared from lithium slag
By preparing a lithium-copper composite negative electrode and utilizing the nucleophilic sites in lithium slag to achieve uniform deposition of lithium ions, the problem of dendrite growth of the lithium metal negative electrode is solved, the stability and cycle performance of the battery are improved, and the production cost and environmental pollution are reduced.
CN120809755APending Publication Date: 2025-10-17XIANGTAN UNIV
0 Cites 2 Cited by
Patent Information
- Application Number
- CN202510826437.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-19
- Publication Date
- 2025-10-17
AI Technical Summary
Technical Problem
During the charge and discharge process, the high activity and uneven deposition of lithium on the lithium metal anode lead to dendrite growth, resulting in low coulombic efficiency, poor cycle performance and safety performance.
Method used
Lithium slag is used to prepare a lithium-copper composite negative electrode. By introducing nucleophilic sites into the lithium-copper composite negative electrode, lithium ions are deposited evenly, the growth of lithium dendrites is inhibited, and long-term stable cycling is promoted.
Benefits of technology
Effectively inhibit the growth of lithium dendrites, improve the coulombic efficiency and cycle performance of lithium metal negative electrodes, reduce production costs and reduce environmental pollution.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a method for preparing a lithium-copper composite negative electrode by utilizing lithium slag and application, and the preparation method of the negative electrode comprises the following steps: adding the lithium slag with certain concentration after removing impurities such as Ca < 2 + >, Mg < 2 + > and Fe < 3 + > through acid treatment into metal lithium in a molten state, and fully stirring until the reaction is complete; and coating the molten metal lithium obtained after the reaction on a current collector to obtain the modified lithium metal negative electrode plate. The prepared lithium-copper composite negative electrode has a lithium-loving 3D frame structure, volume expansion in the circulation process can be inhibited, lithium oxide, lithium aluminum alloy and lithium silicon alloy existing on the 3D frame structure can serve as lithium-loving sites for uniform lithium ion deposition, lithium dendrite growth is inhibited, and long-term stable circulation of the lithium metal negative electrode is promoted.
Need to check novelty before this filing date? Find Prior Art