| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an energy storage device of large capacity density. <P>SOLUTION: A viologen derivative salt or a bipyridyl derivative salt dissolved into an electrolyte at a concentration of 0.1 M or more is used as a negative electrode active material, at least one active material selected from a transition metal complex, an aniline group low molecular compound, a neutral radical compound or π conjugated polymer is used as a positive electrode, and further an active carbon, fibrous carbon and a porous carbon, etc. are used as an electrode. For example, the energy storage device includes at least the positive electrode, the negative electrode, the electrolyte, a separator and the active material where at least a part is dissolved into the electrolyte, and the active material is a nitrogen-containing aromatic compound and/or a quaternary ammonium salt of the nitrogen-containing aromatic compound. <P>COPYRIGHT: (C)2010,JPO&INPIT |
