Hexaboride Structure (image) University of California - San Diego Share Print E-Mail Caption The researchers have created for the first time compounds made from mixtures of calcium hexaboride, strontium and barium hexaboride. The resulting ceramics are essentially crystalline structures in a cage of boron. To store hydrogen, the researchers would swap the calcium, strontium and boron with hydrogen atoms within the cage. Credit Olivia Graeve/Jacobs School of Engineering at UC San Diego Usage Restrictions Please credit Olivia Graeve/Jacobs School of Engineering at UC San Diego Share Print E-Mail 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.