Abstract:
유동배터리는제1 전극, 제1 전극으로부터분리되어있는제2 전극, 및제1 전극과제2 전극과의사이에배치되는전해질세퍼레이터층을갖는적어도하나의셀을포함한다. 저장부는적어도하나의셀과유체연결된다. 적어도하나의액체전해질은전기화학활성종을포함하고적어도하나의셀에선택적으로전달될수 있다. 전기회로가제1 전극및 제2 전극과연결된다. 회로는활성충전/방전모드와관련하여비활성정지모드로부터의적어도하나의셀의전환에응답하여제1 전극및 제2 전극에걸친전압전위를제한하도록구성되는전압제한장치를포함한다.
Abstract:
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%.
Abstract:
A flow battery includes at least one cell that has a first electrode, a second electrode spaced apart from the first electrode and an electrolyte separator layer that is arranged between the first electrode and the second electrode. A storage portion is fluidly connected with the at least one cell. At least one liquid electrolyte includes an electrochemically active specie and is selectively deliverable to the at least one cell. An electric circuit is coupled with the first electrode and the second electrode. The circuit includes a voltage-limiting device that is configured to limit a voltage potential across the first electrode and the second electrode in response to a transition of the at least one cell from an inactive, shut-down mode with respect to an active, charge/discharge mode.
Abstract:
A graphite-containing electrode includes a porous body that has a plurality of first graphite-containing elements and a plurality of second graphite-containing elements intermingled with the first graphite-containing elements. The first graphite-containing elements have a first degree of graphitization and the second graphite-containing elements have a second, different degree of graphitization.
Abstract:
A flow battery includes a stack of manifold plates that define first and second exclusive flow circuits through the stack between first and second stack inlets and first and second stack outlets. The manifold plates each include a frame that extends around a flow field of an electrochemically active area, with a plurality of port through-holes in the frame. The through-holes are arranged in a rotationally symmetric pattern about a center of the respective manifold plate.
Abstract:
A flow battery includes a cell that has first and second flow fields spaced apart from each other and an electrolyte separator layer. A supply/storage system is external of the cell and includes first and second vessels fluidly connected with the first and second flow fields, and first and second pumps configured to selectively move first and second fluid electrolytes between the vessels and the first and second flow fields. The flow fields each have an electrochemically active zone that is configured to receive flow of the fluid electrolytes. The electrochemically active zone has a total open volume that is a function of at least one of a power parameter of the flow battery, a time parameter of the pumps and a concentration parameter of the fluid electrolytes.