Nanotechnology Now - Press Release: The Future in Two Words: Ionic Liquids

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Abstract:
These molecular soups can be many things to many people in many different applications, including next-generation solar cells, hydrogen fuel cells, and lithium batteries. This may be what caught the eye of the U.S. Department of Energy (DOE), awarding Castner and his colleagues a grant for $2.4 million to delve into the nature of charge-transfer properties of ionic liquids. Previously, his Rutgers ionic liquids research was supported by the American Chemical Society's Petroleum Research Fund. In addition to the new DOE funding, the Rutgers ionic liquids fundamental research is also funded by the National Science Foundation.

The Future in Two Words: Ionic Liquids

New Brunswick, NJ | Posted on February 16th, 2010

Ionic liquids by definition contain ions - atoms positively or negatively charged because they have too few or too many electrons or some other imbalance in their charge. Even with this imbalance, these ions are stable and exist freely in a solution, not bound to any other atoms as they would be in neutral (uncharged) compounds.

Successful with the DOE proposal, Castner is now the lead principal investigator on a three-year DOE-funded program. With his four co-principal investigators from Penn State, University of Iowa, University of Minnesota, and Brookhaven National Laboratory, Castner and his Rutgers colleagues have assembled a top research team for investigating the properties of ionic liquids.

Batteries are a key energy technology, but they can only charge and discharge their electrical energy relatively slowly - think how long it can take a cell phone or computer battery to recharge. When the sun rises or sets on the Rutgers Solar Farm on the Livingston Campus, or when a hybrid car like a Toyota Prius uses regenerative braking technology, high performance capacitors are required.

New supercapacitors and ultracapacitors based on ionic liquid technology will do an even better job than the current technologies. Castner hopes to merge their basic science projects for understanding ionic liquids to help the Rutgers Energy Storage Research Group develop next-generation ultracapacitors and batteries.

Hydrogen fuel cells, a potential successor to conventional batteries, work best at temperatures well above the boiling point of water; evaporative losses can damage the device performance. Because ionic liquids almost never boil and are stable to high temperatures, fuel cells based on ionic liquids are expected to display enhanced performance.

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