Electrolytes, cells and methods of forming passivation layers
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United States of America Patent
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Issued Date -
Sep 28, 2006
app pub date -
Dec 15, 2005
filing date -
Jan 11, 2005
priority date (Note) -
Abandoned
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Abstract
Electrolytes having a second cycle reduction current at 0.3 V vs Li/Li.sup.+ that is less than that of the first cycle. The electrolyte comprising a salt, which will not electrochemically passivate. A cell comprising a positive electrode, a negative electrode and an electrolyte having a second cycle reduction current at 0.3 V vs Li/Li.sup.+ that is less than that of the first cycle, said electrolyte comprising a salt, which will not electrochemically passivate. A method of forming an SEI layer in a cell comprising a positive electrode, a negative electrode and an electrolyte, said method comprising the step of overcharging the electrolyte prior to fabricating the cell, or said cell during the formation cycle.
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