Patent ID: 8525155

Claim:
A device, comprising: a first electrode; a second electrode; and an electrolyte comprising an ionic liquid composition, the ionic liquid composition comprising: a phosphonium based cation of the formula; and one or more anions comprised of any one of more of the following anion mixtures; 1NO 3 − /1O 3 SCF 3 , 3NO 3 − /1O 3 SCF 3 , 1NO 3 − /3O 3 SCF 3 , 1NO 3 − /1N(SO 2 CF 3 ) 2 − , 1NO 3 − /1PF 6 − , 1O 3 SCF 3 − /1N(SO 2 CF 3 ) 2 − , 1O 3 SCF 3 − /1O 3 SC 6 H 4 CH 3 − , 3O 3 SCF 3 − /1O 3 SC 6 H 4 CH 3 − , 1O 3 SCF 3 − /1O 3 SCF 2 CF 2 CF 3 − , 1O 3 SC 6 H 4 CH 3 − /3O 3 SCH 3 − , 1O 3 SC 6 H 4 CH 3 − /1O 3 SCF 2 CF 2 CF 3 − , 3O 3 SC 6 H 4 CH 3 − /1O 3 SCF 2 CF 2 CF 3 − , or 1O 3 SC 6 H 4 CH 3 − /3O 3 SCF 2 CF 2 CF 3 − ; wherein said electrolyte is electrically coupled to at least one of said first and second electrodes.