A lithium-ion battery
By setting protrusions and depressions on the positive electrode and using low-viscosity carboxylic acid esters and nitrile compounds as electrolyte components, the lithium-ion transport path is optimized, solving the lithium plating problem during the fast charging process of lithium-ion batteries and improving the fast charging performance and cycle stability of the battery.
CN122117768APending Publication Date: 2026-05-29ZHUHAI COSMX BATTERY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHUHAI COSMX BATTERY CO LTD
- Filing Date
- 2024-11-28
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
During the fast charging process of lithium-ion batteries, lithium plating leads to reduced battery life and safety hazards. How can we effectively control lithium plating while increasing charging speed?
Method used
By setting protrusions and depressions on the positive electrode and adjusting the ratio of their height to diameter, and by using low-viscosity carboxylic acid esters and nitrile compounds as electrolyte components, the lithium-ion transport path can be optimized.
Benefits of technology
It improves the battery's fast-charging performance and cycle stability, reduces lithium plating, and enhances battery safety and lifespan.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122117768A_ABST
Abstract
The present application relates to the technical field of lithium ion batteries, and provides a lithium ion battery. In the lithium ion battery, in the thickness direction of the positive electrode sheet, the positive electrode sheet comprises a first surface and a second surface arranged oppositely, a plurality of first protruding parts are arranged at intervals on the first surface, and a plurality of first recessed parts are arranged correspondingly on the second surface; the height of the first protruding part is denoted as H μm, the diameter of the first protruding part is denoted as R mm, H and R satisfy 0.2<=H / R<=80; the electrolyte comprises a carboxylic acid ester, the mass ratio of the carboxylic acid ester in the total mass of the electrolyte is denoted as A; A satisfies 10<=A<=80; the electrolyte comprises a nitrile compound, the mass ratio of the nitrile compound in the total mass of the electrolyte is denoted as B; B satisfies 3<=B<=30. When the above conditions are satisfied, the fast charging performance of the battery can be improved, and the cycle stability of the battery can be improved.
Need to check novelty before this filing date? Find Prior Art