Lithium Ion 1 (IMAGE) DOE/SLAC National Accelerator Laboratory Caption The lithium-ion batteries commonly used to power electric buses and cordless tools and vacuum cleaners are often made up of billions of nanoparticles of lithium iron phosphate, the battery material investigated in this paper. The material can also be used for storage for wind and solar power in electrical grids. Credit Greg Stewart/SLAC National Accelerator Laboratory Usage Restrictions None License Licensed content 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.