| 摘要 |
A gel-form solid polymer electrolyte which comprises (a) a matrix consisting of an acrylic ester polymer having structural units derived from at least one acrylic ester selected among those represented by general formulae (I) and (II); (b) a nonaqueous solvent comprising a carbonic ester; and (c) a salt of a Group Ia metal of the Periodic Table, wherein formula (I), R<1>, R<2> and R<2'> are the same or different and each represents hydrogen or C1-4 alkyl; R<3> represents C1-4 alkyl; and n is an integer of 1 to 100, and in formula (II), R<4> to R<9> are the same or different and each represents hydrogen or C1-4 alkyl; and p, q and r are the same or different and each is an integer of 1 to 100. Since the electrolyte comprises the acrylic ester polymer as the matrix and the specific nonaqueous solvent contained therein, it has a high ionic conductivity and is electrochemically stable. It is usable in electrochemical elements for primary battery, secondary battery, capacitor, electrochromic display, etc., and in medical actuator, etc. |
