E-magy represents a silicon nano sponge powder, aiming to debottleneck the energy density of Li-ion battery anodes with high capacity silicon. The sponge characteristic ensures a decent change-discharge cyclelife, which is increasingly important for electric transport applications
The position of rechargeable batteries is of high importance to facilitate the energy transition, for transportation purposes as well as electronics and stationary applications. As battery components and materials play a crucial role to improve capacity and cyclelife of Li-ion batteries, the market is urgently looking for viable solutions to implement enhanced materials. Due to the capacity ceiling of the energy density of carbon, with it’s gravimetric energy density of 372 mAh/g, silicon’s 10 fold energy density potential is widely viewed as the way to go to resolve the energy density bottle neck.
However, as pure silicon expands and contracts with a factor of 3 in a charge/discharge cycle, the industry is working on implementation of silicon-carbon composite solutions, in which volumetric effects are governed such that the cyclelife of the battery is according to application requirements.
The E-magy material deals with the negative degradation effects by its nano structure size and its ingrained pores. Due to the pores, expansion effect can be absorbed within the silicon structure. Therefor an energy density increase of a factor 3 and above at anode level can be realized.
By adding E-magy to the anode composition, E-magy contributes to the overall industry targets to raise the gravimetric/volumetric energy densities to the next level.