An aqueous dispersion having at least 60% by weight water comprising: (i) at least 0.1 wt.% (based on the total weight of the dispersion) of at least one electrically conductive polymer doped with a non-fluorinated polymeric acid wherein fewer than 25% of the available hydrogens bonded to carbon have been replaced by fluorine; (ii) at least one highly-fluorinated acid polymer (HFAP) wherein at least 80% of the available hydrogens bonded to carbon have been replaced by fluorine and wherein the ratio of acid equivalent of the HFAP to acid equivalent of the non-fluorinated polymeric acid is 0.1 to 2; (iii) 1 to 30 wt.% (based on the total weight of the dispersion) of at least one water-compatible organic solvent with a boiling point of greater than 120 °C at atmospheric pressure that is soluble in, miscible with, or dispersable in water to an extent such that a homogeneous mixture is formed, and (iv) 1 to 20 wt.% (based on the total weight of the dispersion) of electrically insulative inorganic oxide nanoparticles selected from the group consisting of silicon dioxide, titanium dioxide, and combinations thereof, wherein the nanoparticles have a particle size less than 50 nm at cumulative 50% volume distribution when dispersed in a liquid and measured at various concentrations using Microtrac Nanonprac based on dynamic light scattering technique; wherein the weight ratio of the electrically insulative inorganic oxide nanoparticles relative to the total of other solids is at least 1.0; and wherein the weight ratio of the electrically insulative inorganic oxide nanoparticles to the conductive polymer is in the range of 1 to 15. (i) at least 0.1 wt.% (based on the total weight of the dispersion) of at least one electrically conductive polymer doped with a non-fluorinated polymeric acid wherein fewer than 25% of the available hydrogens bonded to carbon have been replaced by fluorine; (ii) at least one highly-fluorinated acid polymer (HFAP) wherein at least 80% of the available hydrogens bonded to carbon have been replaced by fluorine and wherein the ratio of acid equivalent of the HFAP to acid equivalent of the non-fluorinated polymeric acid is 0.1 to 2; (iii) 1 to 30 wt.% (based on the total weight of the dispersion) of at least one water-compatible organic solvent with a boiling point of greater than 120 °C at atmospheric pressure that is soluble in, miscible with, or dispersable in water to an extent such that a homogeneous mixture is formed, and (iv) 1 to 20 wt.% (based on the total weight of the dispersion) of electrically insulative inorganic oxide nanoparticles selected from the group consisting of silicon dioxide, titanium dioxide, and combinations thereof, wherein the nanoparticles have a particle size less than 50 nm at cumulative 50% volume distribution when dispersed in a liquid and measured at various concentrations using Microtrac Nanonprac based on dynamic light scattering technique; wherein the weight ratio of the electrically insulative inorganic oxide nanoparticles relative to the total of other solids is at least 1.0; and wherein the weight ratio of the electrically insulative inorganic oxide nanoparticles to the conductive polymer is in the range of 1 to 15.