Electric sports vehicle weighs less than 1000 kg

February 15, 2012 // By Christoph Hammerschmidt
At the Bochum Car Symposium, chemical company Evonik AG has introduced an electric sports vehicle with rather impressive performance data, with the weight of less than 1000 kilograms (including battery) being one of the most spectacular ones. A chemical company? Indeed: The company contributed the Lithium-ion battery, the tires and parts of the body. The vehicle is based on a Lotus Elise, the famous British sports car.

With the car, Evonik intends to demonstrate the potential of chemistry in light vehicle design. Components such as Evonik's low rolling resistance and the carbon-fibre based Rohacell structural foam helped to drive the weight below the 1000-kg threshold for the first time in this vehicle category. In addition, the design proves that e-cars, hitherto used as short-range city cars in the first place, also have chances to compete in the sports car segment, said Klaus Hedrich who oversees Evonik's Automotive Industry Team.

The core element is Evonik's Lithium-Ion battery. For the design, the company used its proprietary Cerio storage technology. The battery also uses a high-performance separator developed by Evonik which is said to be extremely thin and very heat-resistant. The combination of these elements enables the design of very compact Lithium-Ion batteries with high energy density at low weight, the company said. In addition, the battery boasts high cycle stability, power output capability and safety. 

The performance data of the vehicle are not bad anyway: The 150kW electric engine boost the car to the speed of 100 km/h in 4.4 seconds. Maximum speed is 200 km/h - at this speed the electronic controls cut off any further acceleration.

Evonik cooperates with luxury car maker Daimler in the development of commercial Lithium-Ion batteries.