Journal
CHINESE JOURNAL OF CHEMISTRY
Volume 27, Issue 8, Pages 1459-1463Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.200990245
Keywords
lithium ion battery; overcharge protection; electropolymerization additive; xylene
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Funding
- Shanghai Leading Academic Discipline Project [B113]
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The electrochemical properties and overcharge protection mechanism of xylene as a new polymerizable electrolyte additive for overcharge protection of lithium ion batteries were Studied by cyclic voltammetry tests, charge-discharge performance and battery power capacity measurements. It was found that when the battery was overcharged, xylene could electrochemically polymerize at the overcharge potential of 4.3-4.7 V (vs. Li/Li+) to form a thin polymer film on the surface of the cathode, thus preventing voltage runaway. On the other hand, the use of xylene as an overcharge protection electrolyte additive did not influence the normal performance of lithium ion batteries.
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