Abstract:
An electrochemical cell includes a housing having an inlet, an outlet, and a central axis and an anode-cathode pair disposed concentrically within the housing about the central axis and defining an active area between an anode and a cathode of the anode-cathode pair. An active surface area of at least one of the anode and the cathode has a surface area greater than a surface area of an internal surface of the housing. The anode-cathode pair is configured and arranged to direct all fluid passing through the electrochemical cell axially through the active area.
Abstract:
An electrochemical cell includes a pair of bipolar plates and a membrane electrode assembly between the bipolar plates. The membrane electrode assembly comprises an anode compartment, a cathode compartment, and a proton exchange membrane disposed therebetween. The cell further includes a sealing surface formed in one of the pair of bipolar plates and a gasket located between the sealing surface and the proton exchange membrane. The gasket is configured to plastically deform to create a seal about one of the cathode compartment or the anode compartment. The sealing surface can include one or more protrusions.
Abstract:
An end pressure plate is provided for an electrochemical cell stack or an electrolyser module. The end pressure plates comprise a load transfer plate for maintaining even pressure over the faces of the structural plates, and a backing plate for supporting load transferred from the load transfer plate.
Abstract:
Die Erfindung beschreibt eine Konstruktionseinheit für bipolare Elektrolyseure nach der Filterpressentechnik, wenigstens umfassend eine erste Halbschale (12), eine zweite Halbschale (14) und ein rahmenförmiges Trägerelement (10), wobei wenigstens eine der Halbschalen (12, 14) Kunststoff enthält, die beiden Halbschalen (12, 14) innerhalb des Trägerelements (10) so angeordnet sind, dass die Rückwand der ersten Halbschale (12) und die Rückwand der zweiten Halbschale (14) aneinander liegen, das Trägerelement (10) sowie die beiden Halbschalen (12, 14) wenigstens zwei Öffnungen (16, 19) für die Zuführung und Abführung von Elektrolyt und/oder Gas aufweisen und die beiden Halbschalen (12, 14) im Boden (11, 13) übereinander liegende Durchbrüche (15, 15') für die Aufnahme von wenigstens einem elektrisch leitfähigen Verbindungselement (30) aufweisen, an dem in der ersten Halbschale (12) eine erste Elektrode (42) und in der zweiten Halbschale (14) eine zweite Elektrode (44) befestigt ist.
Abstract:
The invention relate to an electrolyte cell with a terminal anode and a terminal cathode and bipolar cell elements which are situated between the outer cell elements provided with said terminal anode and cathode. Said bipolar cell elements are connected in series to the outer cell elements and to one another, and each cell element has one or two gas diffusion electrodes one of which also forms the top of the electrolyte chamber immediately beneath it and the floor of the electrolyte chamber immediately above it. The terminal anode and the anodes of the bipolar cell elements have a perforated electrode structure of high electrical conductivity. Electrolyte and reaction gas such as oxygen are fed to each electrolyte chamber and a mixture of electrolyte and the resulting product and reaction gas is drawn off from each electrolyte chamber. The cell elements are assembled in a stack and the terminal cathode and the cathodes of the bipolar elements have a perforated support wall of high electrical conductivity on each of which rests a gas diffusion electrode. The overflows in each of the top cell elements are height-adjustable.
Abstract:
A multiple-chambered electrophoresis cell comprising: an anode chamber, a cathode chamber, a plurality of brine chambers and a plurality of desalinate chambers. Each of the brine chamber/desalinate chamber constructions is defined in part by two flexible membranes. Each of said membranes is supported in a corrugated configuration by a plurality of membrane supports.
Abstract:
An electrolyte electrolyzer adapted to create hydrogen and oxygen from electrolyte fluid at or near atmospheric pressure. The electrolyzer is comprised in a preferred form of a plurality of cells which collectively create oxygen and hydrogen chambers separated by an ion permeable membrane. The electrolyzer is further defined by a passive electrode that is electrically interposed between a charged anode and cathode. The chambers defined by the cells are in communication with oxygen and hydrogen supply lines to transfer the hydrogen gas from the unit.
Abstract:
The invention relates to a constructional unit for bipolar electrolysers of the filter press type, comprising at least a first shell (12), a second shell (14) and a frame support element (10), whereby at least one of the shells (12, 14) contains plastic, both shells (12, 14) are arranged within the support element (10), such that the back wall of the first shell (12) and the back wall of the second shell (14) are adjacent, the support element (10) and both shells (12, 14) comprise at least two openings (16, 19) for the introduction and withdrawal of electrolyte and/or gas and both shells (12, 14) have opposing openings (15, 15') in the base (11, 13), for accommodating at least one electrically-conducting connector element (30) to which a first electrode (42) in the first shell (12) and a second electrode (44) in the second shell (14) are fixed.