Patent ID: RE40302

Claim:
A polymeric electrolyte comprising an electrolytic salt, a polymeric compound forming a complex with the electrolytic salt and a compound having boron atoms which is one or more selected from the group consisting of compounds represented by the following general formulas (1) to (4) wherein R 11 , R 12 , R 13 , R 14 , R 15 and R 16 in formula (1), R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 27 and R 28 in formula (2), R 31 , R 32 , R 33 , R 34 , R 35 , R 36 , R 37 , R 38 , R 39 and R 310 in formula (3), and R 41 , R 42 , R 43 , R 44 , R 45 , R 46 , R 47 , R 48 , R 49 , R 410 , R 411 and R 412 in formula (4), which may be the same or different, each represent a hydrogen atom, a halogen atom or a monovalent group, or are bound to each other to form a ring, R a in formula (1) represents a group having a site capable of being bound to at least 3 boron atoms which are the same or different, R b in formula (2) represents a group having a site capable of being bound to at least 4 boron atoms which are the same or different, R c in formula (3) represents a group having a site capable of being bound to at least 5 boron atoms which are the same or different, and R d in formula (4) represents a group having a site capable of being bound to at least 6 boron atoms which are the same or different.