Patent ID: 8057937
Filing Date: 2011-11-15
Classification: H01G,H01M,Y02E,Y02P

Abstract:
1. A hybrid battery, comprising: an electrode unit including an anode and a cathode; a separator for electrically separating the anode and the cathode; and an electrolyte filled in a space between the anode and the cathode for forming an electric double layer on surfaces of the anode and cathode when a voltage is applied, wherein the electrolyte contains a mixture of a lithium salt, an ammonium salt, and a pyrrolidinium salt as solutes in a carbonate-based solvent so that the mixture has a concentration of 1.0-2.5 mol/L, and wherein the pyrrolidinium salt is butylmethylpyrrolidinium having a concentration of 1.5-2.0 mol/L.