Lithium sulfide compound as well as preparation method and application thereof
By preparing lithium sulfide composites with specific compositions, the problem of limited improvement in electrochemical performance in existing lithium sulfide in battery applications is solved, and the high ionic conductivity and insulation performance of solid electrolytes are achieved, thereby improving the electrochemical performance and safety performance of the battery.
CN119706752APending Publication Date: 2025-03-28NINGBO RONBAY LITHIUM BATTERY MATERIAL CO LTD
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Patent Information
- Application Number
- CN202411876246.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The existing lithium sulfide has limited improvements in battery electrochemical performance in battery applications, especially in terms of ionic conductivity and insulation performance of solid electrolytes.
Method used
By preparing a lithium sulfide complex with a specific composition that has a specific peak area ratio and other physical properties in the XPS map, it is used to prepare a solid electrolyte with excellent ionic conductivity and insulation properties.
Benefits of technology
The lithium sulfide composite can significantly improve the ionic conductivity and insulation performance of solid electrolytes, thereby improving the electrochemical performance and safety performance of the battery.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a lithium sulfide compound as well as a preparation method and application thereof. An XPS (X-ray polystyrene) spectrum of the lithium sulfide compound has a first characteristic peak with binding energy of 160.0 to 160.03 eV, a second characteristic peak with binding energy of 161.16 to 161.20 eV, a third characteristic peak with binding energy of 161.21 to 161.25 eV and a fourth characteristic peak with binding energy of 162.2 to 162.4 eV; the sum A1 of the peak area of the first characteristic peak and the peak area of the second characteristic peak and the sum A2 of the peak area of the third characteristic peak and the peak area of the fourth characteristic peak meet the condition that A1: A2 = (80-95): (5-20). When the lithium sulfide compound is applied to the solid electrolyte, the ionic conductivity and the insulating property of the solid electrolyte can be improved, so that the electrochemical performance of a battery is improved.
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