(IMAGE) Toyohashi University of Technology (TUT) Caption Cycling performance of Sn4P3 and Sn4P3/C composite films for different carbon contents (left) in a two-electrode cell with Li metal as the counter electrode. Cycling test was performed at cell voltage windows ranging from 0 V to 2.5 V. SEM images of Sn4P3/C composite film surface after the 1st (middle) and 100th cycles (right) are also shown. 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.