A manufacturing method of a separator for a fuel cell, including: preparing a first die including: a first convex surface and a first concave surface; and a first side surface connected between the first convex surface and the first concave surface; preparing a second die including: a second concave surface and a second convex surface respectively facing the first convex surface and the first concave surface; and a second side surface facing the first side surface and connected between the second concave surface and the second convex surface; preparing a metal plate having a flat plate shape, and two electro-conductive resin sheets; and forming a flow channel in the metal plate and the two electro-conductive resin sheets by hot pressing with the first and second dies.

In order to improve usability of hybrid or fully electric aircraft, a fuel cell having improved efficiency and increased volume/weight specific energy density is provided. The fuel cell has a self-supporting membrane structure that is formed as a triply periodic level surface, which separates a first cavity supplied with gaseous fuel from a second cavity supplied with gaseous oxidizer in a gas-sealed manner while connecting the cavities in an ion-conductive manner.

A method to join electrochemical cell members comprising an inorganic material by laser. The method includes the steps of positioning the electrochemical cell members to each other, defining the constituents of the joining process, utilizing a laser system to generate a laser beam, focusing the laser beam spot on the electrochemical cell members, and establishing the joint by producing joint segments in a defined joining sequence. The joining method allows to produce gastight, high-temperature resistant connections between electrochemical cell members.

A connector system for use in connecting a fuel cell plate to an electrical device includes first arms elastically deformable toward each other to allow an insertion of the first arms into a first slot of a fuel cell plate and elastically returnable to provide a force against a surface of the fuel cell plate to hold the arms against the fuel cell plate, and second arms elastically deformable toward each other to allow an insertion of the second arms into a second slot of an electrical device and elastically returnable to provide a force against a surface of the electrical device to hold the arms against the electrical device. The first arms are connected to the second arms at intersecting points allowing movement of the first arms relative to the second arms.

A fuel cell includes a membrane electrode assembly, a first plate separator and a second plate separator on opposite sides of the membrane electrode assembly and a voltage sensor for detecting a cell voltage relative to opposite sides of the membrane electrode assembly. A transmitter is coupled to the sensor and configured to wirelessly transmit an indication of the cell voltage.

An electrical connection system for cell voltage monitoring in a fuel cell stack. A fuel cell stack assembly comprises a plurality of fuel cells disposed in a stacked configuration, each cell substantially parallel to an x-y plane and including an electrical tab extending laterally from an edge of a plate in the cell in the x-direction to form an array of tabs extending along a side face of the fuel cell stack in a z-direction orthogonal to the x-y plane. A connector device comprises a planar member having a plurality of spaced-apart slits formed in an edge of the planar member, each slit having an electrically conductive material on an inside face of the slit. The slits are spaced along the edge of the planar member and configured to receive the tabs by sliding engagement in the y-direction. Alternatively, each tab may be crimped to create a distortion in the tab out of the x-y plane of the plate and a connector device comprises a planar member having a plurality of generally parallel slits formed in the body of the planar member, each slit having an electrically conductive material on an inside face of the slit, the slits being spaced within the planar member and configured to receive the tabs by sliding engagement in the x-direction so that each tab engages with at least a portion of the electrically conductive material on the inside face of a respective slit.

A fuel cell assembly is disclosed comprising a fuel cell electrode component and a reactant gas flow component ink bonded thereto. In one aspect direct bonding of a gas diffusion layer with a flow field is achieved allowing a simplified structural configuration. In another aspect improved component printing techniques reduce corrosion effects. In a further aspect flow fields are described providing reactant channels extending in both the horizontal and vertical directions, i.e. providing three dimensional flow. In a further aspect an improved wicking material allows wicking away and reactant humidification. In a further aspect improved mechanical fastenings and connectors are provided. In a further aspect improved humidification approaches are described. Further improved aspects are additionally disclosed.

A loading-unloading assist system includes a holder that holds a plurality of single cells such that the single cells are detachable from the holder, and a lifting device that moves the holder up and down. The holder holds the plurality of single cells in a state where the single cells are arrayed in a straight line at predetermined intervals.

A solid oxide fuel cell is provided that includes an an anode, a cathode, and an electrolyte provided between the anode and the cathode.

An electrochemical reaction unit cell including an electrolyte layer containing a solid oxide; a cathode and an anode which face each other in a first direction with the electrolyte layer intervening therebetween; and an intermediate layer disposed between the electrolyte layer and the cathode and containing a first cerium oxide. In the electrochemical reaction unit cell, the cathode includes an active layer containing a strontium-containing perovskite oxide, a second cerium oxide, sulfur, and strontium sulfate and having ion conductivity and electron conductivity, and a grain of the strontium sulfate covers at least a portion of the surface of a grain of the second cerium oxide.