Low-Cost Water Splitter (image) Stanford University Caption Stanford scientists have developed a low-cost device that uses an ordinary AAA battery to split water into oxygen and hydrogen gas. Gas bubbles are produced from electrodes made of inexpensive nickel and iron. Credit Mark Shwartz/Stanford Precourt Institut for Energy Usage Restrictions Graphics, photographs and videos provided by the Precourt Institute for Energy at Stanford University are to be used -- with appropriate credit -- for editorial purposes only. Flopping, altering, editing or otherwise embellishing these images and audio clips in any way that changes the editorial content of these images and audio clips is prohibited. Permission is for one-time use only. Supplied image file must be deleted after use. 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.