| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polymer electrolyte increasing the discharge capacity and cycle characteristics of a secondary battery. <P>SOLUTION: The polymer electrolyte contains a polymer of a compound expressed by formula (1), a compound expressed by formula (2) and a trimetylborate. The polymer of the compound of formula (1) is 5.0-60.0 mass%, the compound of formula (2) is 39.0-94.0 mass%, and the trimethylborate is 1.0-40.0 mass% to the sum of the polymer of the compound of formula (1), the compound of formula (2) and the trimethylborate in the mass-based blending ratio. In formulae (1) and (2), B is a boron atom, Z<SP>1</SP>, Z<SP>2</SP>and Z<SP>3</SP>are acryloyl groups or methacryloyl groups, A<SP>1</SP>O and A<SP>2</SP>O are 2-6C oxyalkylene groups, R<SP>1</SP>and R<SP>2</SP>are 1-10C hydrocarbon groups, h, i and j are numbers of 1-10, and k is a number among 4-20. <P>COPYRIGHT: (C)2011,JPO&INPIT |
