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New high-performance lithium-ion battery 'top candidate' for electric cars

24.02.2011
Scientists are reporting development of an advanced lithium-ion battery that is ideal for powering the electric vehicles now making their way into dealer showrooms.

The new battery can store large amounts of energy in a small space and has a high rate capacity, meaning it can provide current even in extreme temperatures. A report on this innovation appears in ACS' Journal of the American Chemical Society.

Bruno Scrosati, Yang-Kook Sun, and colleagues point out that consumers have a great desire for electric vehicles, given the shortage and expense of petroleum. But a typical hybrid car can only go short distances on electricity alone, and they hold less charge in very hot or very cold temperatures. With the government push to have one million electric cars on U.S. roads by 2015, the pressure to solve these problems is high. To make electric vehicles a more realistic alternative to gas-powered automobiles, the researchers realized that an improved battery was needed.

The scientists developed a high-capacity, nanostructured, tin-carbon anode, or positive electrode, and a high-voltage, lithium-ion cathode, the negative electrode. When the two parts are put together, the result is a high-performance battery with a high energy density and rate capacity. "On the basis of the performance demonstrated here, this battery is a top candidate for powering sustainable vehicles," the researchers say.

The authors acknowledge funding from WCU (World Class University) program through the Korea Science and Engineering Foundation.

ARTICLE FOR IMMEDIATE RELEASE "An Advanced Lithium Ion Battery Based on High Performance Electrode Materials"

DOWNLOAD FULL TEXT ARTICLE http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/ja110522x

CONTACT:
Bruno Scrosati, Ph.D.
Department of Chemistry
University of Rome Sapienza
00185
Rome, Italy
Tel: +39 06-4462866
Fax: +39 06-491769
Email: bruno.scrosati@uniroma1.it

Michael Bernstein | EurekAlert!
Further information:
http://www.acs.org

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