Abstract: A zinc-bromine flowing electrolyte battery comprising a negative electrolyte pump to circulate negative electrolyte within a negative electrolyte circulation path, a positive electrolyte pump to circulate positive electrolyte within a positive electrolyte circulation path and having complexed bromine located within a positive electrolyte tank, the positive electrolyte tank in fluid communication with the positive electrolyte circulation path. In use, preferential activation of either of the negative electrolyte pump or the positive electrolyte pump will determine whether positive electrolyte only or a positive electrolyte and complexed bromine mix are circulated within the positive electrolyte circulation path.

Abstract: A cell stack (700) as provided enables a flowing electrolyte battery to have a reduced size and weight. The cell stack (700) includes a casing having a positive polarity end and a negative polarity end. A plurality of half cells (805) are inside the casing, and each half cell (805) includes an electrode plate (705), an adjacent separator plate (715), and at least one capillary tube (727) positioned between the electrode plate (705) and the adjacent separator plate (715). The capillary tube (727) has a first end extending outside of the half cell (805) and a second end located inside the half cell (805). At least one manifold (530) is in hydraulic communication with a plurality of capillary tube ends including the first end of the capillary tube (727) in each half cell (805). The capillary tube (727) in each half cell (805) enables electrolyte to circulate through the plurality of half cells (805) via the at least one manifold (530).

Abstract: A recombinator for a flowing electrolyte battery comprises a housing defining a reaction chamber for receiving a halogen source and a hydrogen source. A catalyst is located within the reaction chamber to catalyse the formation of hydrogen halide from the halogen source and the hydrogen source and substantially all of the halogen source, hydrogen source and hydrogen halide within the reaction chamber are maintained in gaseous form.

Abstract: A cell stack (700) as provided enables a flowing electrolyte battery to have a reduced size and weight. The cell stack (700) includes a casing having a positive polarity end and a negative polarity end. A plurality of half cells (805) are inside the casing, and each half cell (805) includes an electrode plate (705), an adjacent separator plate (715), and at least one capillary tube (727) positioned between the electrode plate (705) and the adjacent separator plate (715). The capillary tube (727) has a first end extending outside of the half cell (805) and a second end located inside the half cell (805). At least one manifold (530) is in hydraulic communication with a plurality of capillary tube ends including the first end of the capillary tube (727) in each half cell (805). The capillary tube (727) in each half cell (805) enables electrolyte to circulate through the plurality of half cells (805) via the at least one manifold (530).