Vanadium Oxide-Carbon Composite Anode Active Material, Method for Manufacturing the Same, and Lithium-Ion Battery Comprising the Same

Vanadium Oxide-Carbon Anode Material with a Network Structure via Solvothermal Synthesis in Mixed Solvents

This technology involves a solvothermal synthesis method using an optimized volume ratio of isopropanol and glycerol to produce V2O3/C composite anode active materials with a network structure of interconnected spherical nanoparticles.

Vanadium oxide (V2O3) has historically suffered from low electrical conductivity and structural instability, leading to issues such as capacity degradation, poor rate capability, and limited cycle life when used as an anode in lithium-ion batteries.

By utilizing a mixed solvent of isopropanol (43) and glycerol (7) for solvothermal synthesis (150–200°C) followed by heat treatment (500–1000°C), this technology produces micro-sized spherical V2O3/C particles with an integrated carbon network. This improves conductivity and structural stability, making it ideal for enhancing both the reliability and efficiency of secondary battery anode materials.

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Key Features:

• Dissolving ammonium metavanadate in a mixed solvent containing isopropanol and glycerol in a 43:7 volume ratio
• Placing the resulting solution into a reactor and performing solvothermal synthesis to prepare a precursor
• Heat-treating the prepared precursor to form a V2O3/carbon composite anode active material
• Controlling the mixed solvent ratio to ensure a network structure of interconnected spherical nanoparticles

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