Mechanoelectricity of a nanoporous monel–electrolyte solution system

The electrification of an electrolyte solution in a nanoporous alloy is investigated through a mechanoelectricity measurement experiment. As the liquid flows across the nanoporous electrode, charge separation occurs over the large nanopore surface, resulting in a significant output voltage, which is in-phase with the actuator motion. This phenomenon is different from the conventional streaming current effect, since the solid phase is conductive and no voltage can be developed along its surface.