Four Varieties of Cathode Were Tested (IMAGE)
Caption
To develop higher capacity batteries, researchers have looked to lithium sulfur batteries because of sulfur's high theoretical capacity and energy density. But there are still several problems to solve before they can be put into practical applications. The biggest is the shuttling effect that occurs during cycling. To solve this problem and improve lithium sulfur battery performance, the researchers created a sandwich-structured electrode using a novel material that traps polysulfides and increases the reaction kinetics. Four varieties of cathode design were tested: a) bare sulfur electrode, b) the partially confined structure PZ67/S, c) the partially confined structure S/PZ67 and d) the fully confined, sandwich structure PZ67/S/PZ67, which outperformed the others in both initial capacity and capacity after battery cycling.
Credit
Xing Gao, Siwu Li, Ying Du and Bo Wang
Usage Restrictions
Journalists may use this image only with appropriate credit.
License
Licensed content