Abstract: This invention provides a display element comprising an electrolyte between opposed electrodes. The electrolyte contains silver, or a compound containing silver. The opposed electrodes are driven and operated so that silver is dissolved and precipitated. The display element is characterized in that this electrolyte satisfies the following requirements a to c: a. a cyclic carboxylic acid ester having a dielectric constant of not less than 30 and not more than 50 is contained as an organic solvent; b. formula (1) is satisfied: 0<[x]/[Ag]?0.1 (1) wherein [x] represents the total molar concentration (mol/kg) of halogen ions or halogen atoms contained in halide molecules; and [Ag] represents a total molar concentration (mol/kg) of silver or a compound containing silver; and c. the concentration of silver or a compound containing silver in an organic solvent is not less than 0.2 mmol/g and not more than 0.5 mmol/g.

Abstract: This invention provides a display element comprising an electrolyte between opposed electrodes. The electrolyte contains silver, or a compound containing silver. The opposed electrodes are driven and operated so that silver is dissolved and precipitated. The display element is characterized in that this electrolyte satisfies the following requirements a to c: a. a cyclic carboxylic acid ester having a dielectric constant of not less than 30 and not more than 50 is contained as an organic solvent; b. formula (1) is satisfied: 0<[x]/[Ag]?0.1 (1) wherein [x] represents the total molar concentration (mol/kg) of halogen ions or halogen atoms contained in halide molecules; and [Ag] represents a total molar concentration (mol/kg) of silver or a compound containing silver; and c. the concentration of silver or a compound containing silver in an organic solvent is not less than 0.2 mmol/g and not more than 0.5 mmol/g.