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Author

Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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3-Chloroanisole for overcharge protection of a Li-ion cell

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Title
3-Chloroanisole for overcharge protection of a Li-ion cell
Author
Lee, Young-GiCho, Jaephil
Keywords
3-Chloroanisole; Electrolyte additive; Li-ion cell; Overcharge protection
Issue Date
200709
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ELECTROCHIMICA ACTA, v.52, no.25, pp.7404 - 7408
Abstract
We observed that 3-chloroanisole (3CA), as an electrolyte additive was very effective for overcharging protection during a 12 V overcharging reaction. During overcharging, the cell voltage did not increase beyond 5.3 V, as opposed to other aromatic compounds that showed a voltage shoot-up to 12 V. This behavior was due to the 3CA decomposition and the formation of conducting polymer film within separator and at cathode/electrolyte interface, which consumes the surplus current and inhibit the voltage increase through the shunting effect. In addition, the use of 3CA did not lead to any problems with rate capability, cycle life, and long-term storage behavior at 50 and 70 °C. Furthermore, during storage at 90 °C for 4 and 24 h, electrolyte with 3CA in a Li-ion cell showed a similar increase of cell thickness as a cell without 3CA.
URI
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DOI
http://dx.doi.org/10.1016/j.electacta.2007.06.032
ISSN
0013-4686
Appears in Collections:
ECHE_Journal Papers

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