Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Direct visualization of sulfur cathodes: New insights into Li-S batteries via operando X-ray techniques

Published

Author(s)

Seung-Ho Yu, Xin Huang, Kathleen A. Schwarz, Rong Huang, Tomas Arias, H?ctor Abruna

Abstract

As the need for the development of post lithium ion battery technologies rapidly rise, lithium sulfur batteries have attracted widespread attention due to their high theoretical energy density of 2600 Wh kg-1. However, the detailed reaction mechanism remains poorly understood. In this study, we have combined two operando X-ray techniques, X-ray diffraction and X-ray microscopy, to visualize the evolution of both the morphology and crystal structure of the materials during the entire battery cycling process. The dissolution and reformation of sulfur clusters is clearly observed during cycling. In addition, some of the factors determining the size of the resulting sulfur clusters have been indentified for the first time. This study provides new insights into the continued development of lithium sulfur batteries.
Citation
Energy and Environmental Science
Created December 19, 2017, Updated January 8, 2018