All leading automakers are involved in one way or another in the development of solid-state batteries that reduce electric vehicle weight, increase range, charge faster, and improve safety. Porsche believes it is possible to increase the range of electric vehicles up to 1300 km by switching from conventional liquid electrolyte batteries to a different chemical composition of the anodes, but it is also to some extent relying on solid-state batteries.
Within the Volkswagen Group, the Porsche brand is one of the driving forces behind the electrification of the model range, as the associated high costs can be better justified in the premium segment. According to the resource carscoopsciting scientists and engineers working with Porsche, replacing graphite with silicon in the anodes of traction batteries will increase energy storage density tenfold and it will be possible to charge from 5 to 80% in less than 15 minutes .
However, such anodes have a significant disadvantage in the form of increased expansion capacity when absorbing lithium – this shortens battery life. The company’s specialists have to counteract this by limiting the silicon content in the anode composition and now increasing it to 80%. At the same time, work is being done to increase the nickel content in the cathodes, which will allow an increase in charging speed and the resulting power.
With the combination of new battery chemistries and tighter packaging, the specialists supported by Porsche expect to increase the range of electric vehicles to 1,300 km in the coming years. Continued transition to solid-state batteries will increase the range of flagship EVs by another 30-50%. Some progress can be made on the charging station side. Their power is to be increased to 500 kW, but for this the charging ports must also undergo liquid cooling, not to mention the power cables.