(IMAGE) Toyohashi University of Technology (TUT) Caption (left) These are the charge-discharge curves for phosphorus-encapsulated carbon nanotubes with nanopores on the sidewalls. (right) Charge and discharge capacities with a ratio of charge and discharge capacities at each cycle (Coulombic efficiencies). Credit Copyright (c) Toyohashi University Of Technology. All Rights Reserved. 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.