Lithium–sulfur batteries: Making the invisible visible

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The presence of polysulfides in Li–S batteries significantly affects battery operation, but their presence and reaction mechanisms are not well understood. Now, an operando X-ray diffraction approach is used to directly observe these polysulfides, offering insights on their formation and evolution.

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Figure 1: The many reactions inherent to a Li–S battery under discharge generating the wealth of polysulfides.

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Correspondence to Patrik Johansson.

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Johansson, P. Lithium–sulfur batteries: Making the invisible visible. Nat Energy 2, 17076 (2017). https://doi.org/10.1038/nenergy.2017.76

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