REDOX FLOW BATTERY

摘要

One aspect of the present invention provides a redox flow battery which minimizes an area of a spacer tightly closed to an electrode plate. A redox flow battery according to one embodiment of the present invention includes: a membrane for allowing an ion to pass therethrough; an electrode plate disposed to form an inner volume at both sides of the membrane; a spacer installed in the inner volume between the membrane and the electrode plate; and flow frames each containing the membrane and the electrode plate, attached to each other in a stack direction to define the inner volume, and including a fluid channel through which electrolyte is supplied to the inner volume, wherein the spacer includes a support part including a first member extended in a first direction and spaced apart from a second member in a second direction crossing the first direction, and the second member extended in the second direction and spaced apart from the first member in the first direction while crossing the first member to support the membrane, and a protrusion part protruding from a point at which the first and second members of the support part cross each other to support the electrode plate.