new sodium-aluminum battery design (IMAGE) DOE/Pacific Northwest National Laboratory Caption The new sodium-aluminum battery design allows only sodium (depicted as yellow balls) to move through the solid-state electrolyte to charge the battery. Being constructed of inexpensive Earth-abundant materials such as sodium salts and aluminum wool, a scrap product of aluminum manufacturing, is an advantage. Credit (Diagram by Sara Levine | Pacific Northwest National Laboratory) Usage Restrictions No restrictions. License Public Domain 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.