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Xylene as a New Polymerizable Additive for Overcharge Protection of Lithium Ion Batteries
Author(s) -
ZHANG Qianyu,
QIU Chenchen,
FU Yanbao,
MA Xiaohua
Publication year - 2009
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200990245
Subject(s) - overcharge , chemistry , electrolyte , lithium (medication) , cyclic voltammetry , electrochemistry , battery (electricity) , cathode , ion , thermal runaway , chemical engineering , inorganic chemistry , electrode , organic chemistry , power (physics) , physics , quantum mechanics , engineering , endocrinology , medicine
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.