Hydrogen Fuel Cell Vehicle (image) American Chemical Society Caption Researchers report hydrogen storage by silicon nanotubes exceeds that of their carbon couterparts. Silicon could play a large role in the emergence of "clean" hydrogen fuel cell vehicles. Credit ornl.gov 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.