Mixture, cation conductor and electrochemical device using those

A cation conductor, comprising:

• a first compound formed of 2-phenylimidazole;
• and
• a second compound of at least one selected from the group consisting of a compound having a structure expressed in Chemical formula 4, a compound having a structure expressed in Chemical formula 5, and a compound having a structure expressed in Chemical formula 6:
• where X1 represents an element of Group 1 in the long-period periodic table;
• where X2 represents an element of Group 1 in the long-period periodic table;
• and
• where Y represents hydrogen or halogen, X3 represents an element of Group 1 in the long-period periodic table, and n represents a positive integer,
• wherein a mixture of the first compound and the second compound is insoluble in water.

An electrochemical device, comprising a pair of electrodes is arranged with a cation conductor in between,

• wherein the cation conductor contains:
• a first compound formed of 2-phenylimidazole;
• and
• a second compound of at least one selected from the group consisting of a compound having a structure expressed in Chemical formula 7, a compound having a structure expressed in Chemical formula 8, and a compound having a structure expressed in Chemical formula 9:
• where X1 represents an element of Group 1 in the long-period periodic table;
• and
• where X2 represents an element of Group 1 in the long-period periodic table;
• where Y represents hydrogen or halogen, X3 represents an element of Group 1 in the long-period periodic table, and n represents a positive integer
• wherein a mixture of the first compound and the second compound is insoluble in water.