Patent ID: 7527899

Claim:
An electrolytic salt, comprising: a formula of B is boron; O is oxygen; C is carbon; Y 1 and Y 2 having a chemical bond with a pair of oxygen; Y 1 having a formula XC—(CR 2 ) a CX, wherein a is 0 to 4, R is a halogen, X is selected from the group consisting of ═O, —C═N, CR′ 3 , and R′ 3 , wherein R′ is a halogen, when a is 0, then X is CF 3 ; Y 2 having a formula XC—(CR 2 ) a CX, wherein a is 0 to 4, R is a halogen, X is selected from the group consisting of ═O, —C═N, CR′ 3 , and R′ 3 , wherein R′ is a halogen, when a is 0, then X is CF 3 ; and M + is selected from the group consisting of Group I and Group II elements.