Lithium sulfur batteries present great potential as a high energy and low cost energy storage technology. Good progress has been made in the past few years in terms of understanding sulfur electrochemistry, electrode&electrolyte design and development. A few research groups have also tried to integrate all the pieces together to make a practical battery. However, there are still technical challenges, for example, the amount of electrolyte has to be significantly decreased, i.e., the electrolyte to sulfur ratio, E/S, has to be dereased (the so-called lean electrolyte operation) - without further innovation and engineering, good electrochemical performance obtained with flooded electrolytes cannot be reproduced under lean electrolyte condition; the large amount of high surface porous carbon used as host materials in sulfur cathode imposes great limitation on the E/S ratio. In this talk, we will discuss our recent effort on lean electrolyte Li-S batteries. We will present our new discovery of sulfur electrochemistry and electrode design which may provide alternative pathway for high energy Li-S batteries.

High-energy Li-S batteries: New discovery on sulfur electrochemistry and electrode design

254th National Meeting (2017)

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