Abstract: A method for jump-starting a hydrogen fuel cell-powered aircraft is disclosed. The method accesses a fuel cell stack containing latent oxygen therein. Accesses a hydrogen fuel source and provides hydrogen from the hydrogen fuel source into the fuel cell stack causing the hydrogen to mix with the latent oxygen in the fuel cell stack and generate a voltage. The voltage is then provided to a component of the hydrogen fuel cell-powered aircraft such that additional oxygen is introduced to the fuel stack.

Abstract: A micro light emitting diode (LED) and a method of forming an array of micro LEDs for transfer to a receiving substrate are described. The micro LED structure may include a micro p-n diode and a metallization layer, with the metallization layer between the micro p-n diode and a bonding layer. A conformal dielectric barrier layer may span sidewalls of the micro p-n diode. The micro LED structure and micro LED array may be picked up and transferred to a receiving substrate.

Abstract: Disclosed is a method for displaying actionable information on an electronic vehicle display panel which includes: receiving data from a plurality of sensors. The data received from each of the plurality of sensors is analyzed to determine a data category for the data from each sensor, wherein each data category corresponds to an information priority level. The data from each of the plurality of sensors is displayed according to the determined data category, wherein data within a data category corresponding to a high information priority level is displayed more prominently relative to other data, and wherein data within a data category corresponding to a low information priority level is displayed less prominently relative to other data; and displaying at least a portion of the data as at least one from the set of: a fuel cell voltage difference, a hydrogen flow rate, a temperature discrepancy, and a rate of temperature change.

Abstract: The present invention relates to a wound dressing comprising an electrochemical sensor configured to detect the level of an electroactive species within a wound environment during use. The present invention also relates to a method of detecting the level of an electroactive species within a wound environment by applying a wound dressing according to the present invention onto a wound and operating an electrochemical sensor to detect an electroactive species within the wound environment.

Abstract: A system including a battery module configured for use in an electric aircraft includes at least a battery cell and a battery module casing. The at least a battery cell includes at least a pair of cell tabs and at least a conductor. The battery module casing includes at least a lithiophobic surface with an ejecta barrier and at least a nonlithiphobic surface that is configured to vent the cell ejecta. The battery module casing closely matches the dimensions of the battery cell.

Abstract: A system for electrical energy production from chemical reagents in a compartmentalized cell includes: at least two electrodes, comprising at least one anode and at least one cathode; at least one separator, that separates the anodes and the cathodes; and an ionic liquid electrolyte system. The system can be a battery or one or more cells of a battery system. The ionic liquid electrolyte system comprises an ionic liquid solvent; an ether co-solvent, comprising a minority fraction, by weight, of the electrolyte; and a lithium salt. In preferred variations, the anode is a lithium metal anode and the cathode is a metal oxide cathode and the separator is a polyolefin separator.

Abstract: A system and method for predictive fuel cell management system for an integrated hydrogen-electric engine is disclosed. The system includes a fuel cell stack having a plurality of fuel cells and a computer having a memory and one or more processors. The one or more processors configured to predict, during a first phase of energy demand on the integrated hydrogen-electric engine, an impending occurrence of a second phase of energy demand on the integrated hydrogen-electric engine, wherein the second phase of energy demand includes a predetermined energy demand; and generate a predetermined amount of energy from the plurality of fuel cells based on the predicted second phase of energy demand prior to starting the second phase of energy demand to improve energy efficiency and performance of the integrated hydrogen-electric engine.

Abstract: Described herein are methods and systems for controlling the charge and discharge characteristics of lithium-metal liquid-electrolyte (LiMLE) electrochemical cells that ensure extended cycle life even at high charge rates. In some examples, a method comprises charging a LiMLE electrochemical cell using a set of charge characteristics and discharging the cell using a set of discharge characteristics. These characteristics are specifically tailored to the cell design. For example, the cell temperature can be higher during the charge than during the discharge, especially for viscous electrolytes. For example, the cell can be heated before charging, e.g., using a separate heater and/or charge-discharge pulses (before or while charging the cell). In the same or other examples, the set of charge characteristics comprises charge pulses such that each pair of charge pulses is separated by a discharge pulse. The current during each discharge pulse can be greater during each charge pulse.

Abstract: A system for electrical energy production from chemical reagents in a compartmentalized cell includes: at least two electrodes, comprising at least one anode and at least one cathode; at least one separator, that separates the anodes and the cathodes; and an ionic liquid electrolyte system. The system can be a battery or one or more cells of a battery system. The ionic liquid electrolyte system comprises an ionic liquid solvent; an ether co-solvent, comprising a minority fraction, by weight, of the electrolyte; and a lithium salt. In preferred variations, the anode is a lithium metal anode and the cathode is a metal oxide cathode and the separator is a polyolefin separator.

Abstract: Described herein are battery assemblies that comprise lithium-metal electrochemical cells and pressure-applying structures disposed adjacent to the cells and applying uniform pressure to the cells. Specifically, this uniform pressure is applied between a minimum threshold and a maximum threshold at any operating state of charge of these cells and, in some examples, over the entire operating lifetime of the cells. A pressure-applying structure can be positioned between a pair of adjacent cells or between a cell and an assembly enclosure. In some examples, the footprint of the pressure-inducing structure fully covers the footprint of the negative-electrode planar portion. The pressure-inducing structure may have a stress relaxation of less than 5% and/or a compression set of less than 10%. The pressure-inducing structure may remain in an elastic deformation region at any operating condition. In some examples, the pressure-inducing structure is foam or aerogel.

Abstract: Described herein are battery assemblies that comprise lithium-metal electrochemical cells and lithium-ejecta containment components. A lithium-ejecta containment component is configured to prevent or at least reduce the migration of lithium metal that has been ejected from any of the lithium-metal electrochemical cells. For example, a lithium-ejecta containment component can be positioned between a pair of lithium-metal electrochemical cells and/or between the battery-assembly enclosure and each cell. In the same or other examples, a lithium-ejecta containment component can be integrated into the battery-assembly enclosure and/or cell enclosures. Furthermore, a lithium-ejecta containment component can be configured to absorb and contain the ejected lithium metal. In further examples, a lithium-ejecta containment component is configured to direct the ejected lithium metal away from the battery assembly.

Abstract: An anode for an electrochemical cell comprises a lithium metal or lithium metal alloy, and a polymer coating deposited on the lithium metal or lithium metal alloy. The polymer coating is doped with lithium ions and comprises a polyisocyanurate material. The polyisocyanurate material contains ether- and/or silicone-containing further groups. The ether-containing group is a polyether, and/or wherein the silicone-containing group is a siloxane group.

Abstract: A method of transferring a micro device and an array of micro devices are disclosed. A carrier substrate carrying a micro device connected to a bonding layer is heated to a temperature below a liquidus temperature of the bonding layer, and a transfer head is heated to a temperature above the liquidus temperature of the bonding layer. Upon contacting the micro device with the transfer head, the heat from the transfer head transfers into the bonding layer to at least partially melt the bonding layer. A voltage applied to the transfer head creates a grip force which picks up the micro device from the carrier substrate.

Abstract: A system for electrical energy production from chemical reagents in a compartmentalized cell includes: at least two electrodes, comprising at least one anode and at least one cathode; at least one separator, that separates the anodes and the cathodes; and an ionic liquid electrolyte system. The system can be a battery or one or more cells of a battery system. The ionic liquid electrolyte system comprises an ionic liquid solvent; an ether co-solvent, comprising a minority fraction, by weight, of the electrolyte; and a lithium salt. In preferred variations, the anode is a lithium metal anode and the cathode is a metal oxide cathode and the separator is a polyolefin separator.

Abstract: A method of transferring a micro device and an array of micro devices are disclosed. A carrier substrate carrying a micro device connected to a bonding layer is heated to a temperature below a liquidus temperature of the bonding layer, and a transfer head is heated to a temperature above the liquidus temperature of the bonding layer. Upon contacting the micro device with the transfer head, the heat from the transfer head transfers into the bonding layer to at least partially melt the bonding layer. A voltage applied to the transfer head creates a grip force which picks up the micro device from the carrier substrate.

Abstract: A system for electrical energy production from chemical reagents in a compartmentalized cell includes: at least two electrodes, comprising at least one anode and at least one cathode; at least one separator, that separates the anodes and the cathodes; and an ionic liquid electrolyte system. The system can be a battery or one or more cells of a battery system. The ionic liquid electrolyte system comprises an ionic liquid solvent; an ether co-solvent, comprising a minority fraction, by weight, of the electrolyte; and a lithium salt. In preferred variations, the anode is a lithium metal anode and the cathode is a metal oxide cathode and the separator is a polyolefin separator.

Abstract: A method for jump-starting a hydrogen fuel cell-powered aircraft is disclosed. The method accesses a fuel cell stack containing latent oxygen therein. Accesses a hydrogen fuel source and provides hydrogen from the hydrogen fuel source into the fuel cell stack causing the hydrogen to mix with the latent oxygen in the fuel cell stack and generate a voltage. The voltage is then provided to a component of the hydrogen fuel cell-powered aircraft such that additional oxygen is introduced to the fuel stack.

Abstract: Disclosed are a calibration system and method for correction of tracking drifts in the output section of a satellite payload and a beamforming network. The disclosed technique exploits characterisation of path gain and phase tracking drifts as deterministic errors that can be measured over spacecraft lifetime without statistical approximations, and thereafter predicted for in-orbit daily temperature variations. Also disclosed is a satellite payload for transmitting test signals to the calibration system.

Abstract: Disclosed are a calibration system and method for correction of tracking drifts in the output section of a satellite payload and a beamforming network. The disclosed technique exploits characterisation of path gain and phase tracking drifts as deterministic errors that can be measured over spacecraft lifetime without statistical approximations, and thereafter predicted for in-orbit daily temperature variations. Also disclosed is a satellite payload for transmitting test signals to the calibration system.

Abstract: A method of transferring a micro device and an array of micro devices are disclosed. A carrier substrate carrying a micro device connected to a bonding layer is heated to a temperature below a liquidus temperature of the bonding layer, and a transfer head is heated to a temperature above the liquidus temperature of the bonding layer. Upon contacting the micro device with the transfer head, the heat from the transfer head transfers into the bonding layer to at least partially melt the bonding layer. A voltage applied to the transfer head creates a grip force which picks up the micro device from the carrier substrate.