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BASF to Develop New Battery Materials

Published on July 7, 2011 at 11:20 PM

Batteries are the key technology for the electromobility of the future. Over the next five years, BASF will be investing a three-digit million euro sum in researching, developing and the production of battery materials.

Part of the investment is being channeled into the construction of a production plant for advanced cathode materials in Elyria, Ohio. This new facility with an investment volume of more than $50 million is scheduled to supply the market with cathode materials for the production of high-performance lithium-ion batteries from mid-2012.

Chemical lab technician Christian Saffert tests the discharge capacity of various lithium ion test batteries using a multi-channel test system. BASF is conducting research into a new generation of lithium-ion batteries. The aim is to significantly increase the batteries’ energy density to extend their use in electrically powered vehicles.

New materials enable higher-performance battery concepts

In addition to innovative materials for cathodes, BASF has recently also entered the field of electrolyte development. High-quality tailored electrolytes are essential for battery performance. "By entering into the electrolyte business we are expanding our portfolio of innovative solutions for high-performance lithium-ion batteries and as a future system supplier, we will be able to support our customers' competitiveness in the electromobility field," said Dr. Andreas Kreimeyer, member of the Board of Executive Directors and Research Executive Director of BASF SE. As well as developing materials for lithium-ion batteries, which include solutions for anodes and separators, BASF is also researching future battery concepts such as lithium-sulfur or lithium-air.

"With our research activities we are substantially contributing to making electric cars affordable, environment friendly and sustainable. For this we need batteries and further innovative components that provide a greater driving range with less weight and lower costs," explained Kreimeyer.

Lightweight construction and intelligent heat management reduce energy consumption

To compensate for the additional battery weight of about 200 kg and allow for an acceptable driving range, the weight of electric vehicles must be reduced through lightweight construction components. This naturally places new demands on the materials, including completely new properties in terms of temperature stability, electromagnetic screening and fire resistance. Although plastics already contribute greatly to vehicular weight savings when incorporated in the chassis, interior and engine compartment, further multifunctional lightweight construction concepts are needed. For example, BASF is working on fast-curing epoxy, polyurethane and polyamide resins for fiber reinforced composites to be used in the manufacture of lightweight vehicle bodies. These materials can provide further weight savings of up to 100 to 150 kilograms in structural components and chassis.

BASF also offers solutions for improving heat management in electric cars. "When the temperatures rise in summer, the car's air conditioner consumes additional energy reducing the vehicles driving range," explained Kreimeyer. When incorporated in interiors and automotive coatings, pigments that reflect the heat-generating infrared rays of sunlight prevent the temperature from getting too high inside the car. And while the combustion engine provides exhaust heat in winter, an electric vehicle consumes electricity to heat the interior. To keep energy consumption low under these conditions, it is necessary to insulate electrical vehicles against the cold with high performance foams. This also increases the car's driving range.

Sustainable electromobility - a broader concept than just the electric car

Innovations from chemical research and the right energy mix will be key factors in helping electromobility to make its breakthrough - while remaining sustainable. "We take a holistic view of this topic. Electromobility will only significantly contribute to environmental and climate protection when the electricity from the batteries has been generated high efficiently and with less CO2. Therefore we are investing in research to find ways of generating electricity from renewable energy technologies such as wind and solar energy. We are also developing innovative storage technologies because in our latitudes these forms of energy are not available 24/7," said Kreimeyer.

Policy makers are also called upon to create the appropriate general conditions to ensure that electromobility remains competitive in the global market. This will include government sponsored research and development programs to ensure that Germany retains its technological lead and can take further strides forward in electromobility. The creation of added value and jobs in Germany is another positive outcome.

"If industry together with politics, science and society as a whole all pull in the same direction, electromobility will be successful and become an affordable and sustainable alternative to the classical internal combustion technology," added Kreimeyer.

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