Journal
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
Volume 44, Issue 7, Pages 6217-6229Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13369-019-03808-8
Keywords
X-ray absorption spectroscopy; Lithium-sulfur (Li-S) batteries; In situ and operando; Polymer binder; Electrolyte additive; Redox mechanism
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Funding
- Office of Science, Office of Basic Energy Sciences, of the US Department of Energy [DE-AC02-05CH11231]
- Joint Center for Energy Storage Research, an Energy Innovation Hub - US Department of Energy, Office of Science, Basic Energy Sciences
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Because of the high theoretical energy density of 2600 kg-1, lithium-sulfur (Li-S) batteries are regarded as one of the most promising energy storage technologies to meet the increasing requirement from personal devices to automobiles. However, the practical application of Li-S batteries is still challenging due to technical obstacles, such as low sulfur utilization and poor lifetime. Therefore, understanding the electrode reaction mechanism is of critical importance to further improve the battery performance and lifetime. Here, we review recent progress in the application of in situ and operando X-ray absorption spectroscopy in characterizing Li-S batteries. We discuss in detail how this advanced technique helps researchers understand the redox process of the electrode materials as well as the influence of polymer binder and electrolyte additive on the polysulfide shuttle effect, which provide valuable information for designing better Li-S batteries. A general conclusion and critical further research directions are also provided at the end.
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