Conventional/Traditional lithium-ion batteries use graphite as anode material. Graphite provides a stable framework for the storage of lithium ions, but takes up much of the battery cell’s weight and volume. By means of metallic lithium or silicon thin layers, anodes can be fabricated which, due to their higher specific capacity, enable a significant leap in energy density.
The focus at EZB Dresden is to develop new methods for the production and processing of lithium metal and silicon anodes. By adapting the microstructure, the cycle life should be increased and the charge-state dependent volume changes should be minimized. This key component is expected to increase the energy density by more than 65 % at cell level.