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Cluster of Excellence
Engineering of Advanced Materials
Nanostructured anode materials are greatly demanded for electrochemical energy storage systems based on lithium ion intercalation devices. At EAM, we develop novel TiO2 nanostructures for improved performance in battery, solar-cell and water-splitting applications. Self-organized anodic TiO2 nanotubes provide a large surface area and due to the thin nanotube walls ideal Li diffusion into the lattice can be ensured. TiO2 nanotubes grown in organic electrolytes show a double walled morphology, they contain an inner, carbon-rich layer. The removal or prevention of formation of this carbon-rich layer enables a significant improvement of Li-intercalation and, consequently, areal capacity.
Kirchgeorg, R.; Kallert, M.; Liu, N.; Hahn, R.; Killian, M. S.; Schmuki, P.
Key factors for an improved lithium ion storage capacity of anodic TiO2 nanotubes.
Electrochim. Acta 2016, 198, 56 – 65.