Ratner & Prestia
Secondary battery comprising a polymerizable material in its electrolyte solution
 A battery excellent in high temperature storage characteristic is presented. It comprises a positive electrode having a positive electrode active material containing an transition metal complex oxide containing lithium , a negative electrode containing a negative electrode material capable of storing and releasing a lithium ion, and an electrolytic solution containing a nonaqueous solvent, an electrolyte, and an organic compound expressed in formula 1. ##STR1## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 have individually at least one of H and a group containing a vinyl group, and the number of H substituent is four or less. 
Matsushita Electric Industrial Co., Ltd.
H H H Y H H H H H Y H H H H H Y H
H01M H01M H01M Y02E H01M H01M H01M H01M H01M Y02T H01M H01M H01M H01M H01M Y02P H01M
inventional inventional additional additional additional additional additional inventional additional additional inventional additional inventional inventional additional additional additional
Shoichiro Kazuya Jun Hizuru Atsushi
Watanabe Iwamoto Nunome Koshina Ueda