期刊
SMALL METHODS
卷 4, 期 6, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smtd.201900467
关键词
component optimization; in situ; operando spectroscopic characterization; lithium-sulfur batteries; shuttle effects; soluble polysulfide
资金
- National Natural Science Foundation of China [21875155, 51872193, 21673153, 51675275, 51622208, 21473119]
- Suzhou Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Suzhou, China
- Thousand Youth Talents Plan of China
- Natural Science Foundation of Jiangsu Higher Education Institutions of China [19KJA210004]
- Natural Science Foundation of Jiangsu Province, China [BK20161207, BK20181168]
- China Postdoctoral Science Foundation [2017M611894]
Lithium-sulfur batteries have gained incredible increasing attention due to their high theoretical energy density and comparable low cost. Although great advances are made in optimizing Li-S batteries via rational design of the composition and architecture, daunting challenges remain to restrain the shuttle-effect issue associated with the extremely complicated solid-liquid-solid reaction routes. In recent years, researchers have reached a consensus that the characterization of practical working mechanisms of Li-S batteries is an important prerequisite for optimizing their performance. Numerous in situ/operando spectroscopic techniques with light sources of 10(-10)-10(3) m wavelengths, such as X-rays, UV-vis, nuclear magnetic resonance (radio), infrared, etc., are introduced to supply real-time and console-displayed signals related to the reaction variations of Li-S batteries, thus helping to put forward further optimization strategies in the internal designs. This review systematically summarizes the state-of-the-art in the optimal design of Li-S batteries with the aid of in situ/operando spectroscopic characterizations, including the progress in cathodes, binders, interlayers, electrolytes, and Li metal anodes, aiming to show the powerful ability of in situ/operando spectroscopic techniques in revealing the working and degradation mechanism and scientifically guiding the further optimal design of Li-S batteries.
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