FLOW BATTERY WITH CARBON PAPER

摘要

A flow battery includes a liquid electrolyte having an electrochemically active specie. A flow field plate includes a first flow field channel and a second flow field channel that is separated from the first flow field channel by a rib. There is a flow path for the liquid electrolyte to flow over the rib between the channels. An electrode is arranged adjacent the flow field plate such that the liquid electrolyte that flows over the rib must flow through the electrode. The electrode includes a carbon paper that is catalytically active with regard to liquid electrolyte. The carbon paper defines a compressive strain of less than 20% at a compressive stress of 0.8 MPa and an uncompressed porosity in the range 60-85%.

主权项

1. A flow battery comprising:
a liquid electrolyte including an electrochemically active specie; a flow field plate including a first flow field channel and a second flow field channel separated from the first flow field channel by a rib; a flow path of the liquid electrolyte over the rib between the channels; and an electrode arranged adjacent the flow field plate such that the liquid electrolyte that flows over the rib must flow through the electrode, the electrode including a carbon paper that is catalytically active with regard to liquid electrolyte and that defines a compressive strain of less than 20% at a compressive stress of 0.8 MPa and an uncompressed porosity in the range 60-85%.