Internally manifolded flow cell for an all-iron hybrid flow battery

A system for a flow cell stack for a flow battery, comprising:

• two or more electrolyte inlet feeds;
• two or more electrolyte outlet feeds;
• and
• two or more flow cells, each flow cell comprising:
• a first flow field plate;
• a second flow field plate;
• and
• a polymeric frame, comprising:
• a top face;
• a bottom face;
• a first side;
• a second side, opposite the first side;
• a first electrolyte inlet located on the top face and the first side of the polymeric frame;
• a first electrolyte outlet located on the top face and the second side of the polymeric frame;
• a first electrolyte inlet flow path located within the polymeric frame and coupled to the first electrolyte inlet;
• a first electrolyte outlet flow path located within the polymeric frame and coupled to the first electrolyte outlet;
• a second electrolyte inlet located on the bottom face and the first side of the polymeric frame;
• a second electrolyte outlet located on the bottom face and the second side of the polymeric frame;
• a second electrolyte inlet flow path located within the polymeric frame and coupled to the first electrolyte inlet;
• and
• a second electrolyte outlet flow path located within the polymeric frame and coupled to the first electrolyte outlet,
• wherein the first electrolyte inlet flow path wraps around a first side, a second side, and a third side of the first flow field plate.