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Lithium/Sulfur Batteries Upon Cycling: Structural Modifications and Species Quantification by In Situ and Operando X‐Ray Diffraction Spectroscopy
Author(s) -
Waluś Sylwia,
Barchasz Céline,
Bouchet Renaud,
Leprêtre JeanClaude,
Colin JeanFrançois,
Martin JeanFrédéric,
Elkaïm Erik,
Baehtz Carsten,
Alloin Fannie
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201500165
Subject(s) - in situ , materials science , diffraction , lithium (medication) , sulfur , x ray crystallography , spectroscopy , chemical engineering , analytical chemistry (journal) , chemical physics , chemistry , organic chemistry , optics , metallurgy , medicine , physics , engineering , endocrinology , quantum mechanics
A quantitative analysis of in situ and operando X‐ray diffraction studies allows for deeper insight into the mechanism of Li 2 S formation and consumption. A two‐step reaction process is proposed for both discharge and charge. Changing selectivity for Li 2 S formation is estimated, with solely Li 2 S being formed during the earliest step, followed by possible concurrent formation of Li 2 S 2 intermediate in the further step of discharge.