气候变化领域集成服务门户(CCPortal): Direct visualization of sulfur cathodes: New insights into Li-S batteries via operando X-ray based methods

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DOI	10.1039/c7ee02874a
	Direct visualization of sulfur cathodes: New insights into Li-S batteries via operando X-ray based methods
	Yu S.-H.; Huang X.; Schwarz K.; Huang R.; Arias T.A.; Brock J.D.; Abruña H.D.
发表日期	2018
ISSN	17545692
起始页码	202
结束页码	210
卷号	11 期号:1
英文摘要	As the need for the development of "beyond lithium" ion battery technologies continues unabated, lithium sulfur batteries have attracted widespread attention due to their very high theoretical energy density of 2600 W h kg-1. However, despite much effort, the detailed reaction mechanism remains poorly understood. In this study, we have combined operando X-ray diffraction and X-ray microscopy along with X-ray tomography, to visualize the evolution of both the morphology and crystal structure of the materials during the entire battery cycling (discharging/charging) process. The dissolution and reformation of sulfur clusters is clearly observed during cycling. In addition, we demonstrate, for the first time, the critical role of current density and temperature in determining the size of both the resulting sulfur clusters and Li2S particles. This study provides new insights about promising avenues for the continued development of lithium sulfur batteries, which we believe may lead to their broad deployment and application. © The Royal Society of Chemistry.
英文关键词	Crystal structure; Electric batteries; Lithium; Lithium batteries; Lithium compounds; Secondary batteries; Sulfur; Sulfur compounds; X ray diffraction; Battery cycling; Detailed reaction mechanisms; Direct visualization; Morphology and crystal structures; Sulfur cathodes; Sulfur clusters; X ray microscopy; X-ray tomography; Lithium sulfur batteries; crystal structure; dissolution; electrode; lithium; sulfur; visualization; X-ray
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190345
作者单位	Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States; Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14853, United States; School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, United States; National Institute of Standards and Technology, Material Measurement Laboratory, 100 Bureau Dr, Gaithersburg, MD, United States; Department of Physics, Cornell University, Ithaca, NY 14853, United States
推荐引用方式 GB/T 7714	Yu S.-H.,Huang X.,Schwarz K.,et al. Direct visualization of sulfur cathodes: New insights into Li-S batteries via operando X-ray based methods[J],2018,11(1).
APA	Yu S.-H..,Huang X..,Schwarz K..,Huang R..,Arias T.A..,...&Abruña H.D..(2018).Direct visualization of sulfur cathodes: New insights into Li-S batteries via operando X-ray based methods.Energy & Environmental Science,11(1).
MLA	Yu S.-H.,et al."Direct visualization of sulfur cathodes: New insights into Li-S batteries via operando X-ray based methods".Energy & Environmental Science 11.1(2018).