20240038963. NEGATIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME simplified abstract (LG Energy Solution, Ltd.)
Contents
NEGATIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
Organization Name
Inventor(s)
Sun-Young Shin of Daejeon (KR)
NEGATIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240038963 titled 'NEGATIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
Simplified Explanation
The abstract describes a negative electrode and a lithium secondary battery that includes the same. The negative electrode consists of a current collector and a negative electrode active material layer on at least one surface of the current collector. The negative electrode active material layer includes: 1) a negative electrode active material comprising magnesium-containing silicon oxide particles, and a graphene coating layer surrounding the surface of the magnesium-containing silicon oxide particles, 2) a conductive material comprising single-walled carbon nanotubes (SWCNT), and 3) a binder. The graphene in the graphene coating layer has a D/G band intensity ratio of 0.8 to 1.5, where the D/G band intensity ratio is defined as the average value of the ratio of the maximum peak intensity of the D band at 1360±50 cm based on the maximum peak intensity of the G band at 1580±50 cm, as determined by Raman spectroscopy of the graphene.
- The negative electrode of the lithium secondary battery includes a graphene-coated magnesium-containing silicon oxide active material.
- The graphene coating layer has a specific D/G band intensity ratio.
- The negative electrode also includes a conductive material comprising single-walled carbon nanotubes and a binder.
- The graphene-coated active material improves the performance and stability of the negative electrode.
- The specific D/G band intensity ratio of the graphene coating layer ensures the desired properties of the negative electrode.
Potential applications of this technology:
- Lithium secondary batteries for various electronic devices such as smartphones, laptops, and electric vehicles.
- Energy storage systems for renewable energy sources like solar and wind power.
Problems solved by this technology:
- Improved performance and stability of lithium secondary batteries.
- Enhanced energy storage capacity and efficiency.
- Longer battery life and reduced degradation.
Benefits of this technology:
- Higher energy density and improved overall battery performance.
- Increased lifespan and durability of lithium secondary batteries.
- Enhanced safety and reliability of energy storage systems.
- Potential for faster charging and discharging capabilities.
Original Abstract Submitted
a negative electrode and lithium secondary battery including the same. the negative electrode includes: a current collector; and a negative electrode active material layer on at least one surface of the current collector. the negative electrode active material layer includes 1) a negative electrode active material including a mg-containing silicon oxide particles, and a graphene coating layer surrounding the surface of the mg-containing silicon oxide particles, 2) a conductive material including single-walled carbon nanotubes (swcnt), and 3) a binder. the graphene contained in the graphene coating layer has a d/g band intensity ratio of 0.8 to 1.5, and the d/g band intensity ratio of the graphene is defined as an average value of the ratio of the maximum peak intensity of d band at 1360�50 cmbased on the maximum peak intensity of g band at 1580�50 cm, as determined by raman spectroscopy of the graphene.
