| 摘要 |
PROBLEM TO BE SOLVED: To provide a refining method to adjust an electrolyte with extremely high purity for an electric double-layer capacitor, and to provide such an electric double-layer capacitor that has high durability and an appropriate self-discharging characteristic by using the electrolyte obtained by the refining method. SOLUTION: A quaternary ammonium salt is dissolved in a non-protonic polar solvent, and the solution is added with active carbon. After immersing the active carbon in the electrolyte, the treated liquid is filtered to remove impurities in the electrolyte. Thus, the electrolyte for an electric double-layer capacitor can be obtained. COPYRIGHT: (C)2009,JPO&INPIT
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