Date of Award
Master of Science
Benjamin C. Church, Roshan M. Dsouza
In-Situ Optical Microscopy, Lithium Dendrites, Lithium-sulfur Battery, Nonaqueous Electrolyte, Polysulfide
By utilizing a high-resolution optical microscope, the dendrite formation on a lithium electrode with different electrolytes suitable for Li-S battery was investigated. It is found that the anions of lithium, the solvents, and the deposition current density have significant effects on the dendrite formation and surface morphology of lithium electrodes in electrolytes without polysulfides. On the contrary, in electrolytes with 25 mM concentration of polysulfides, the dendrite formation and surface morphology tend to be similar regardless of the other conditions. The dendrite-suppression effect of polysulfides, inorganic additive (CsNO3), and electrode modifier (TEOS) are not significant in the electrolytes with polysulfides and a high deposition current density (10 mA*cm-2).
Ding, Tianyao, "In-Situ Optical Microscopic Investigation of the Dendrite Formation on Lithium Anode Under Different Electrolyte Conditions in Li-S Battery" (2016). Theses and Dissertations. 1359.