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In Situ/Operando Spectroscopic Characterizations Guide the Compositional and Structural Design of Lithium-Sulfur Batteries

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

  1. National Natural Science Foundation of China [21875155, 51872193, 21673153, 51675275, 51622208, 21473119]
  2. Suzhou Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Suzhou, China
  3. Thousand Youth Talents Plan of China
  4. Natural Science Foundation of Jiangsu Higher Education Institutions of China [19KJA210004]
  5. Natural Science Foundation of Jiangsu Province, China [BK20161207, BK20181168]
  6. China Postdoctoral Science Foundation [2017M611894]

向作者/读者索取更多资源

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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