| abstract |
(57) Abstract: A polymer gel electrolyte comprising a matrix polymer and an electrolyte containing a plasticizer having two or more carbonate structures in a molecule and an electrolyte salt, and a polymer gel electrolyte comprising Secondary battery and electric double layer capacitor using polymer gel electrolyte. According to the present invention, it is possible to obtain a secondary battery which can be operated with high capacity and high current, has a wide operating temperature range, and is excellent in safety, and is particularly suitable as a lithium secondary battery and a lithium ion secondary battery. Can be. According to the present invention, An electric double layer capacitor having a high output voltage, a large take-out current, a wide operating temperature range, and excellent safety can be obtained. |