This technology involves depositing amorphous lithium titanium oxide (LTO) nanoparticles onto the surface of spherical carbon templates via hydrothermal synthesis, followed by heat treatment in an oxidizing atmosphere at 500–700°C to remove the carbon, resulting in a hollow spherical LTO structure.
Conventional LTO synthesis processes often suffer from particle growth during high-temperature sintering, which reduces the specific surface area and degrades high-rate charge/discharge performance. Furthermore, using amorphous LTO presents challenges in securing lithium-ion diffusion pathways due to low crystallinity.
By forming a hollow structure through the deposition of nanoparticles onto carbon templates, this technology increases the contact area with the electrolyte. Additionally, by optimizing the heat treatment temperature to around 600°C, it achieves a balance between crystallinity and particle size. Applicable as an anode material for both lithium-ion batteries and lithium-ion capacitors, it is highly valuable for high-power applications, maintaining over 90% of its initial capacity after 1,000 cycles even at 10C.
N/A
