Abstract: A photovoltaic cell can include an interfacial layer in contact with a semiconductor layer.

Abstract: The following disclosure relates to an electrochemical cell or system that is configured to operate with forced water flow on the cathode side of the cell and forced water flow on the anode side of the cell. The system may include at least one electrochemical cell having a cathode, an anode, and a membrane separating the cathode and the anode. The system has the forced water flow on the cathode side of the cell to be principally in opposite direction of the forced water flow on the anode side of the cell.

Abstract: The following disclosure relates to electrochemical or electrolysis cells and components thereof. More specifically, the following disclosure relates methods and systems for removing metal ions from a membrane of an electrochemical cell by introduction of a cleaning composition (e.g., an acidic composition) into a water supply to the electrochemical cell. These systems and methods for removal of metal ions from the membrane(s) of the electrochemical cell(s) may advantageously extend the efficiency and service life of the electrochemical cell or stack.

Abstract: The following disclosure relates to electrochemical or electrolysis cells and components thereof. In one example, the cell includes an electrode, a membrane, and a plurality of interconnecting layers positioned between the electrode and the membrane. The plurality of interconnecting layers includes a local interconnecting layer positioned adjacent to the membrane and a global inter- connecting layer positioned adjacent to the electrode. Further, the plurality of interconnecting layers provides a vertical conduction in a direction extending along an axis running between the electrode and the membrane.

Abstract: Electrochemical cells having recombination layers are disclosed herein. One example of such a cell includes a membrane configured to be positioned between an anode flow field and a cathode flow field of the electrochemical cell. The cell further includes a recombination layer configured to be positioned between the anode flow field and at least a portion of the membrane. The recombination layer includes a catalyst configured to assist in a formation of water from hydrogen gas and oxygen gas produced within the electrochemical cell, therein mitigating any hydrogen gas crossover from a cathode side to an anode side of the electrochemical cell.

Abstract: A membrane in an electrochemical cell may be electrically and/or mechanically coupled to a flow-field plate using a conductive adhesive. Various types of adhesives with conductive particles may be used. The adhesive may be selected such that in the fluid phase it is able to diffuse through one or more porous layers of the electrochemical cell, such as a liquid/gas diffusion layer. In some cases, the use of conductive adhesive may increase the level of inter-component electrical contact that may be achieved for a given level of compressive force applied between the components in the electrochemical cell.

Abstract: A photovoltaic cell can include an interfacial layer in contact with a semiconductor layer.

Abstract: The following disclosure relates to methods of identifying defects (e.g., short circuits) in a membrane of an electrolytic cell. The following disclosure further relates to methods of repairing such a defect in the membrane of the electrolytic cell, particularly without having to disassemble the membrane from adjacent components of the electrolytic cell.

Abstract: The following disclosure relates to an electrolytic cell or system that is configured to operate with the anode or oxygen side of the cell or stack of cells at a pressure greater than atmospheric pressure. The system may include at least one electrolytic cell having a cathode, an anode, and a membrane separating the cathode and the anode. The system has an operating pressure on the cathode (hydrogen) side of the cell and an operating pressure on the anode (oxygen) side of the cell. The system is configured to operate with the operating pressure on the cathode side of the cell being greater than the operating pressure on the anode side of the cell. Further. the system is configured to operate with the operating pressure on the anode side of the cell being greater than 1 atm.

Abstract: An electrolyzer system includes a multiple-state power input and control circuitry for the multiple-state power input. The control circuitry is configured to obtain a power source metric indicator and, based on the power source metric indicator, determine a hydrogen generation profile for the electrolyzer. The control circuitry is configured to determine, based on the hydrogen generation profile, a selected state from among multiple power states of the electrolyzer system. The control circuitry is configured to cause operation of the electrolyzer system in the selected state.

Abstract: The following disclosure relates to electrochemical or electrolysis cells and components thereof, specifically porous transport layers within electrochemical cells and methods of making such layers. In one particular example, a method of forming a portion of an electrochemical cell includes providing a porous transport layer, placing a flow field plate adjacent to a surface of the porous transport layer, and sintering or diffusion bonding the porous transport layer and the flow field plate, therein forming a uniform or homogeneous interface between the porous transport layer and the flow field plate.

Abstract: The following disclosure relates to electrochemical or electrolysis cells and components thereof. More specifically, the following disclosure relates methods and systems for removing metal ions from a membrane of an electrochemical cell by introduction of a cleaning composition (e.g., an acidic composition) into a water supply to the electrochemical cell. These systems and methods for removal of metal ions from the membrane(s) of the electrochemical cell(s) may advantageously extend the efficiency and service life of the electrochemical cell or stack.

Abstract: The following disclosure relates to methods of identifying defects (e.g., short circuits) in a membrane of an electrolytic cell. The following disclosure further relates to methods of repairing such a defect in the membrane of the electrolytic cell, particularly without having to disassemble the membrane from adjacent components of the electrolytic cell.

Abstract: An electrolyzer system includes a multiple-state power input and control circuitry for the multiple-state power input. The control circuitry is configured to obtain a power source metric indicator and, based on the power source metric indicator, determine a hydrogen generation profile for the electrolyzer. The control circuitry is configured to determine, based on the hydrogen generation profile, a selected state from among multiple power states of the electrolyzer system. The control circuitry is configured to cause operation of the electrolyzer system in the selected state.

Abstract: A photovoltaic cell can include an interfacial layer in contact with a semiconductor layer.

Abstract: An electrochemical cell including a getter material, a battery including the electrochemical cell, and methods of forming the electrochemical cell and battery are disclosed.

Abstract: An electrochemical cell including a getter material, a battery including the electrochemical cell, and methods of forming the electrochemical cell and battery are disclosed.

Abstract: A rechargeable battery with elastically compliant housing includes a housing and at least one battery cell. The housing includes a pair of substantially rigid end plates and an elastically compliant structure joining the end plates so that the end plates are oriented in respective planes that are substantially parallel to each other and define a gap there between. Each battery cell is contained in the housing in the gap between the end plates and includes an anode, a cathode, and a separator between the anode and the cathode. The elastically compliant structure joins the end plates and includes an elastic component that exhibits elastic expansion greater than 3% along an axis orthogonal to the planes in which the end plates are oriented.

Abstract: Electrolytes for use in commercially viable, rechargeable lithium metal batteries are described. The electrolytes contain one or more lithium salts, one or more organic solvents, and one or more additives. The electrolytes allow for reversible deposition and dissolution of lithium metal. Specific additives or additive combinations dramatically improved cycle life, decrease cell swelling, and/or lower cell impedance.

Abstract: A secondary cell comprising a positive cathode electrode of capacity P (mAh) in communication with a liquid or gel electrolyte; an negative anode electrode of capacity N (mAh) in communication with the electrolyte; and a separator permeable to at least one mobile species which is redox-active at least one of the anode and the cathode; designed and constructed such that the anode capacity N is smaller than that of the cathode capacity P, hence N/P<0.9.