An electric spraying device includes a spray emitter made of electrically conductive material, an electrode container made of electrically conductive material, and a voltage source. The electrode container has an opening at an upper end thereof, and the voltage source has a first pole electrically coupled to the spray emitter and a second pole electrically coupled to the electrode container. The spray emitter has an exit end disposed at or within the opening of the electrode container. The exit end of the spray emitter has a surface with a set of projections extending therefrom, and the set of projections are configured to form a concentrated electric field in response to an applied voltage from the voltage source between the first pole and the second pole. The spray emitter is constructed and arranged to conduct liquid along the surface to the set of projections, so as to polarize the liquid under the concentrated electric field and to dispense the liquid into the electrode container.
