Given Volkswagen Auto Group's commitment to electric powertrains, it might come as no surprise to some that Porsche may consider building an all-electric 911. With the high-performance car maker set to put the Mission E electric car into production, they said that the key to building a fully-electric 911 will depend on battery development.

At the moment, Porsche believes that lithium-ion batteries are not the right fit for the 911, 718 Boxster and 718 Cayman. Instead, they believe the key to building electric sports cars are with lightweight, solid-state batteries. According to the manufacturer, solid-state batteries allow for higher energy densities and better thermal efficiency. What that means more power can be stored in these batteries, meaning more range and less volatility over lithium-ion units.

Porsche Mission E

Besides giving greater range and efficiency, solid-state batteries are comparatively lighter than lithium-ion packs. Lithium-ion batteries would be too heavy for their sports car, adds Porsche. Porsche does use this battery set-up for their plug-in hybrid variants in certain models such as the Panamera, Panamera Sport Turismo and, in the pipeline, the Cayenne. Even the Mission E concept used lithium-ion batteries but there may be a chance it shifts to solid-state batteries when it hits production. Back to the 911, the next-generation model will also get a hybrid option.

This is not the first time Porsche has toyed with the idea of an all-electric sports car. Back in 2011, the German automaker stuck in electric motors and then put it in the body of a 718 Boxster. Dubbed the Boxster E, it used two electric motors, effectively making it all-wheel drive. Power figures were rated at 245 PS and 540 Nm of torque, which gave it a 0 to 100 km/h time of 5.5 seconds and a restricted top speed of 200 km/h.

Source: Autocar UK