Lithium sulfur battery cathode electrode surface treatment during discharge
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United States of America Patent
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Jun 28, 2016
Grant Date -
Aug 6, 2015
app pub date -
Feb 4, 2014
filing date -
Feb 4, 2014
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Abstract
Methods and apparatus are provided for discharging a Li—S battery having at least one battery unit comprising a lithium-containing anode and a sulfur-containing cathode with an electrolyte layer there between. One method comprises electrochemically surface treating the sulfur-containing cathode during discharge of the battery. A method of electrochemically surface treating a cathode of a lithium-sulfide battery comprises applying at least one oxidative voltage pulse during a pulse application period while the lithium-sulfur battery discharges and controlling pulse characteristics during the pulse application period, the pulse characteristics configured to affect a morphology of lithium sulfide forming on the sulfur-containing cathode during discharge.
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