New insights into the electrode mechanism of lithium sulfur batteries via air-free post-test analysis

Chem Commun (Camb). 2016 Aug 2;52(64):9913-6. doi: 10.1039/c6cc04401h.

Abstract

Effects of the volume expansion and shrinkage of Li2S cathodes on electrochemical cycle life are investigated via post-test analysis without exposure to air. The engineered electrodes that confine volume changes within micro-reactors have significantly longer life than the electrodes without the micro-reactor structure, providing the first unambiguous evidence of the importance of confining volume changes for improved battery performance.