LIANO Lithium Silicides as Anode Materials for Lithium-Ion Batteries

Lithium Silicides as Anode Materials for Lithium-Ion Batteries

Evaluate 3-D mesoporous lithium silicide as a viable anode material in Li-ion batteries.
Create an effective, stable LiF-coated mesoporous LixSi materials, enhancing their stability in ambient conditions and during electrode processing.

Silicon (Si) is one of the most promising anode materials for next-generation high-energy lithium-ion batteries due to its theoretical charge capacity, which is ten times higher than that of graphite.
However, Si anodes themselves pose challenges: large volume changes during charging/discharging, and their low Coulombic efficiency in the first cycles consumes a large amount of lithium due to continuous solid electrolyte interphase (SEI) layer formation.
LIANO aims to overcome these limitations by developing novel mesoporous lithium silicides by using template/self assembly and impregnation techniques.
To counteract the high reactivity of the lithium silicide and to produce an air-stable material, a protective layer of lithium fluoride will be developed.
LIANO will contribute to the optimization of the synthesized LiF-coated lithium silicide to enable the development of a new stable anode material for high-energy Li ion batteries with higher storage capacities, especially for traction applications.

Universität Wien, Fakultät für Chemie, Institut für Anorganische Chemie - Funktionelle Materialien (https://functionalmaterials.univie.ac.at)