Electrolyte optimization for a Li ion battery by charge profile analysis |
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Authors: | Minwhan Cha Cheolsoo Jung |
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Affiliation: | (1) Department of Chemical Engineering, University of Seoul, 13 Shiripdae-gil, Dongdaemun-gu, Seoul, 130-743, Korea |
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Abstract: | Electrolyte design for Li ion batteries was approached by means of comparison of faradaic and non-faradaic currents. The faradaic
current by the movement of Li+ ions was dependent on the composition of the electrolyte and was related to the battery capacity; the higher the capacity,
the greater the current by the faradaic reaction. The open circuit potential of the electrode with a greater faradaic current
decreased at a slower rate than that of the electrode with a smaller faradaic current. This analysis method can be used to
prepare an optimal electrolyte of an actual Li ion battery, especially when developing batteries with excellent high-rate
discharge capabilities and low temperature discharge properties. |
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Keywords: | Faradaic reaction Non-faradaic reaction Open circuit voltage Li ion battery Electrolyte |
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