Abstract:
A water electrolyzer (100) for producing hydrogen gas comprising a stack of electrode plates (101) arranged in alternate polarities separated by dividers (104) and sandwiched between two end plates (107, 108), in which one of the end plates is an anode terminal (107) and the other is a cathode terminal (108), wherein the stack of plates (101) has a hollow centre for electricity connection and apertures (113, 114) around the hollow centre forming channels for distribution of electrolyte and collection of electrolytic products.
Abstract:
L'invention concerne un procédé de pilotage d'un électrolyseur à haute température dont le ou les empilements de cellules sont disposés dans une enceinte préalablement chauffée à une haute température et isolée thermiquement, l'électrolyseur étant relié à une source d'énergie électrique pour son alimentation en puissance afin de réaliser une réaction d'électrolyse, le procédé comprenant : la surveillance (E41 ) de la puissance fournie par la source d'énergie; la déviation (E42) en amont de l'électrolyseur d'une partie de la puissance fournie par la source d'énergie pour le chauffage du ou des empilements de cellules, lorsque la valeur de la puissance fournie devient inférieure à une valeur limite préalablement déterminée; pas de déviation sinon. L'invention concerne également un procédé de production d'hydrogène ou de syngas intégrant le procédé de pilotage ci-dessus, un système de pilotage mettant en œuvre le procédé de pilotage ci-dessus et un système de production d'hydrogène mettant en œuvre le procédé de production d'hydrogène correspondant.
Abstract:
A seal for an electrolyser cell and an electrolyser cell provided with such a seal. A seal (100) for an electrolyser cell comprising a core (101) and a shell (201). The core (101) is generally annular and has two faces mutually opposite each other in a thickness direction and at least two openings (111, 113). The two openings (111, 113) are through-openings in the thickness direction and are substantially diametrically opposed to each other. The shell (201) at least partially covers the two faces, leaving the two openings (111, 113) at least partially free. The shell (201) has at least one first rib (203) extending over a first (103) of the two faces according to a contour enclosing an inner edge (107) of the core (201) and the two openings (111, 113) in such a way as to allow a fluid to circulate between the two faces in the thickness direction.
Abstract:
A composite cell plate comprises a polymer element laterally mated and interlocked, at a plurality of engagement points, with a resilient metal element. The cell plate can be used in an electrochemical cell.
Abstract:
L'invention concerne essentiellement un cadre d'isolation électrique et d'étanchéité, pour la distribution des gaz dans un électrolyseur à haute température de la vapeur d'eau type SOEC ou dans une pile à combustible de type SOFC. Selon l'invention, on regroupe une partie des fonctions d'étanchéité, de distribution des gaz et d'isolation électrique entre interconnecteurs au sein d'un même composant sous la forme d'un cadre en matériau isolant électrique dont les zones en creux servent de support aux joints proprement dits, ce qui facilite leur mise en oeuvre et leur maintien.
Abstract:
The invention concerns a glass composition for the use as a sealant, particularly in a solid oxide fuel cell (SOFC) or in a solid oxide electrolyser cell (SOEC). The glass composition comprises 35-70 mol% CaO, 5-45 mol% ZnO, 5-50 mol% B 2 O 3 , 1-45 mol% SiO 2 , and 1 mol% or less of each element of the group, comprising Ba, Na and Sr, based on the total glass composition. Furthermore, the invention relates to an SOFC and an SOEC employing a sealant of said glass composition.
Abstract translation:本发明涉及用作密封剂的玻璃组合物,特别是在固体氧化物燃料电池(SOFC)或固体氧化物电解池电池(SOEC)中。 玻璃组合物包含35-70摩尔%CaO,5-45摩尔%ZnO,5-50摩尔%B 2 O 3,1-45摩尔%SiO 2和1摩尔%以下的每一种元素,包括Ba,Na和 Sr,基于玻璃的总成分。 此外,本发明涉及使用所述玻璃组合物的密封剂的SOFC和SOEC。
Abstract:
A hydrogen fuel system (10) for an internal combustion engine comprises a water reservoir (20) and a fuel cell (30) formed from a plurality of fuel cell stacks (150) in fluid communication with the water reservoir. Each fuel cell stack has at least one cathode (32), at least one anode (34) and a proton exchange membrane (36) for separating water from the water reservoir into hydrogen and oxygen when an electrical current is applied across the at least one cathode and at least one anode. Each fuel cell stack includes at least one gasket (380) disposed between two components of the fuel cell stack, the gasket including: a through hole (374) formed therein for passage of hydrogen or oxygen through the gasket; and a plurality of channels (372) formed in the gasket adjacent the through hole, each of the plurality of channels extending from an edge of the through hole to an edge of the gasket, the channels being sized and shaped to allow passage of hydrogen or oxygen to or from the through hole to or from the edge of the gasket.
Abstract:
The invention relates to an electrochemical cell, comprising an anode half-shell (14) and a cathode half-shell (15) which are separated from one another by a membrane (8), having the corresponding electrodes, and the anode half-shell (14) and the cathode half-shell (15) each have an outer wall (12, 13), each outer wall having in the contact region of the two half-shells flange regions (16, 17) which are designed as a frame, and the flange regions (16 and 17) have assembly holes (4) which mark an inner region (23) and an outer region (24) of the electrochemical cell and a gas diffusion electrode (6) which rests on a support system (7), and a porous medium (9) which lies on the gas diffusion electrode (6), and devices for delivering and removing gas (18, 19) and electrolyte (20, 21). The invention is in particular characterised in that at least one peripheral frame seal (3) is provided in the contact region of the two half-shells between the frame-like flange regions (16 and 17) of the outer walls (12 and 13) of the two half-shells, and said seal lies on the membrane (8), wherein the porous medium (9) and the gas diffusion electrode (6) lie on the frame-like cathodic flange region (17) and in said region the peripheral frame seal (3) overlaps the porous medium (9) and the gas diffusion electrode (5), wherein said overlap region (2) has at least two profiled areas (1), wherein the peripheral frame seal has at least one further profiled area (22) in the contact region of the two half-shells between the frame-like flange regions (16 and 17) outside the overlap region of the porous medium (9) and the gas diffusion electrode (6) and/or at least one deformable sealing cord (5) is arranged, wherein the further profiled area (22) and/or the deformable sealing cord (5) is disposed in the inner region (23) of the electrochemical cell.