Shouheng Sun, Brown University (image) Brown University Caption "The (fuel cell) reaction requires a catalyst, and platinum is currently the best one, but it's very expensive and has a very limited supply." Sun and his team have produced a new non-platinum catalyst that shows promise of replacing platinum. Credit Mike Cohea/Brown University Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.