Coin Cell Battery Cross Section (IMAGE) University of Washington Caption Slice from x-ray computed tomography image of a supercapacitor coin cell assembled with the electrode materials. The thin layers -- just below the coin cell lid -- are layers of electrode materials and a separator. Credit William Kuykendall Usage Restrictions Must include credit 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.