Abstract:
A topping cycle fuel cell unit includes a support plate having internal flow passages that extend to combustion outlets, a first electrode layer, an electrolyte layer, and a second electrode layer. The second electrode layer is configured to be coupled to another support plate of another fuel cell unit. The internal flow passages are configured to receive and direct air across the first electrolyte layer or the second electrolyte layer and to receive and direct fuel across another of the first electrolyte layer or the second electrolyte layer such that the first electrode layer, the electrolyte layer, and the second electrode layer create electric current. The internal flow passages are configured to direct at least some of the air and at least some of the fuel to the combustion outlets where the at least some air and the at least some fuel is combusted.
Abstract:
An electrochemical cell is presented. The cell includes a housing having an interior surface defining a volume, and an elongated separator disposed in the housing volume. The elongated separator defines an axis of the cell. The separator has an inner surface and an outer surface. The inner surface of the separator defines a first compartment. The outer surface of the separator and the interior surface of the housing define a second compartment having a volume. The cell further includes a conductive matrix disposed in at least a portion of the second compartment volume such that the conductive matrix occupies a gap between the outer surface of the separator and the interior surface of the housing. The gap in the second compartment extends in a direction substantially perpendicular to the axis of the cell.
Abstract:
A system includes a primary source of power, a main battery, a reserve battery, and a battery management system. A method for operating the system is also disclosed. The main battery of the system is electrically connected to the article, and the reserve battery is configured to back-up the main battery. The battery management system is electrically connected to the main battery. The battery management system maintains the reserve battery in a dormant state when the primary source of power is operational. The reserve battery is also maintained at a dormant state when the primary source of power is not operational; and the main battery is discharging and able to effectively back-up the primary source of power in supplying power to the article.
Abstract:
An electrochemical cell includes a bifunctional air cathode, an anode, and a ceramic electrolyte separator disposed substantially between the bifunctional air cathode and the anode. The anode includes a solid metal and an electrolyte configured to transition to a liquid phase in an operating temperature range. The electrolyte includes at least one of an alkali oxide, boron oxide, a carbonate, a phosphate, and a group III-X transition metal oxide.
Abstract:
An electrochemical cell includes a bifunctional air cathode, an anode, and a ceramic electrolyte separator disposed substantially between the bifunctional air cathode and the anode. The anode includes a solid metal and a liquid electrolyte phase. The liquid electrolyte phase includes at least one of an alkali oxide, boron oxide, a group V transition metal oxide, and a group VI transition metal oxide.
Abstract:
An electrochemical cell includes a bifunctional air cathode, an anode, and a ceramic electrolyte separator disposed substantially between the bifunctional air cathode and the anode. The anode includes a solid metal and a liquid electrolyte phase. The liquid electrolyte phase includes at least one of an alkali oxide, boron oxide, a group V transition metal oxide, and a group VI transition metal oxide.
Abstract:
An electrochemical cell is presented. The cell includes a housing having an interior surface defining a volume, and an elongated separator disposed in the housing volume. The elongated separator defines an axis of the cell. The separator has an inner surface and an outer surface. The inner surface of the separator defines a first compartment. The outer surface of the separator and the interior surface of the housing define a second compartment having a volume. The cell further includes a conductive matrix disposed in at least a portion of the second compartment volume such that the conductive matrix occupies a gap between the outer surface of the separator and the interior surface of the housing. The gap in the second compartment extends in a direction substantially perpendicular to the axis of the cell.
Abstract:
An energy storage system is disclosed. The energy storage system includes an insulated housing defining an interior chamber, a battery disposed within the interior chamber of the insulated housing, a cooling system configured to manage a temperature of the interior chamber of the insulated housing, and a temperature controller communicatively coupled to the cooling system and comprising at least one processor in communication with at least one memory device. The at least one processor is configured to determine a reference current level at the battery, compute, based on the reference current level, a target temperature for the interior chamber of the insulated housing, and instruct the cooling system to maintain the temperature in the interior chamber of the insulated housing at the target temperature.
Abstract:
An electrochemical cell is presented. The electrochemical cell includes an ion-conducting separator having a first surface that defines at least a portion of a first compartment and a second surface that defines at least a portion of a second compartment, and a positive electrode composition disposed in the first compartment, the positive electrode composition comprising an electroactive metal, an alkali metal halide, and an electrolyte. The electroactive metal includes metal flakes of an average aspect ratio greater than about 5. An energy storage battery including a plurality of electrochemical cells is also presented.
Abstract:
A positive electrode composition is described, containing granules of at least one electroactive metal, at least one alkali metal halide and carbon black. An energy storage device and an uninterruptable power supply device are also described. Related methods for the preparation of a positive electrode and an energy storage device are also disclosed.