Lithium supplement agent and preparation method thereof, positive pole piece and secondary battery
By using sulfide composite materials of lithium sulfide and second sulfide as lithium supplement agents, the existing positive electrode lithium supplement agents are easily produced and poor lithium supplement effects are solved, and the effect of improving battery performance stability and overall performance is achieved.
CN119695154APending Publication Date: 2025-03-25HUBEI WANRUN NEW ENERGY TECH CO LTD
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Patent Information
- Application Number
- CN202411748295.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-10-16
- Filing Date
- 2024-11-29
- Publication Date
- 2025-03-25
AI Technical Summary
Technical Problem
The existing positive electrode lithium supplement agents have problems such as easy gas production and poor lithium supplementation effects, which leads to the inability to effectively improve the overall performance of the battery.
Method used
The sulfide composite material is used as the lithium supplement agent, including lithium sulfide and doped second sulfide. After the lithium is removed, the remaining sulfur is bonded to the second sulfide to form polysulfide, etc., to avoid the formation and deposition of sulfur element, thereby improving battery performance.
Benefits of technology
It effectively reduces the negative impact of sulfur element residue on battery performance, and improves battery performance stability and overall performance.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a lithium supplement agent, and belongs to the technical field of energy storage, the lithium supplement agent comprises a sulfide composite material, the sulfide composite material comprises a first sulfide and a second sulfide doped in the first sulfide; the first sulfide comprises lithium sulfide, and the second sulfide is selected from at least one of metal sulfide and organic sulfide except lithium sulfide. According to the invention, the problems of easy gas production, poor lithium supplement effect and unfavorable effective improvement of the overall performance of the battery in the lithium supplement of the positive electrode in the related technology are solved.
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