Electrode Material Comprising Carbon-Coated Titanium Dioxide Particles

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This invention relates to an advanced electrode material made from carbon-coated titanium dioxide particles. These particles are engineered to form spherical composites (TiO2/C) that agglomerate into a porous, three-dimensional structure with controlled pore sizes. The resulting material exhibits high capacity and stability, making it ideal for use in lithium-ion batteries, sodium-ion batteries, and supercapacitors, thanks to enhanced electrical conductivity and ion transport.

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• As an anode material in lithium-ion rechargeable batteries for consumer electronics, electric vehicles, and energy storage systems.
• As an anode in sodium-ion batteries, which are emerging as cost-effective and sustainable alternatives to lithium-ion batteries, particularly for large-scale energy storage.
• In supercapacitors, both lithium-ion and sodium-ion based, to enable fast charging/discharging cycles in applications such as grid balancing, backup power, or regenerative braking.
• For high-performance energy storage solutions in renewable energy systems (solar, wind) to store fluctuating energy and smooth supply.
• Potential use in hybrid energy storage devices combining the high energy density of batteries and high power density of supercapacitors.

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• High specific capacity and excellent retention over many charge/discharge cycles (over 500 cycles for batteries, over 2000 for supercapacitors), meaning longer battery life and durability.
• Enhanced electrical conductivity due to the carbon coating, overcoming the inherent limitations of pure titanium dioxide.
• Improved ion diffusion and electrolyte interaction enabled by the tailored porous structure and high surface area, allowing faster charge/discharge rates.
• High chemical and structural stability of titanium dioxide, making the material robust and safe for demanding applications.
• Versatility in synthesis and ability to fine-tune properties (particle size, carbon content, pore size) for different battery or capacitor requirements.

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Patent Abstract

The invention relates to an electrode material having a porous agglomeration of carbon-coated titanium dioxide particles, titanium dioxide particles being coated with carbon and forming spherical TiO2/C particles, which agglomerate to form a porous three-dimensional structure, the average diameter of the pores between the TiO2/C particles lying in the range of ≥ 50 nm to ≤ 200 nm. The invention further relates to electrodes produced therefrom.