Abstract:Recently, it was shown that H2O contamination in lithium-ion batteries can cause H2 gassing during the formation of the solid-electrolyte interphase (SEI) on graphite as well as substantial concentrations of CO2 in the battery cell.1 The latter was attributed to the hydrolysis of ethylene carbonate (EC) in the electrolyte by OH- formed through H2O reduction at the anode. The H2O- and OH--driven EC hydrolysis rates were measured at temperatures between 10 and 80°C by adding discrete amounts of H2O or TBAOH•30H2… Show more
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