Study of a water-vapor electrolysis unit
Sulfuric acid type water vapor electrolysis module for oxygen generation in advanced life support systems
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Sulfuric acid type water vapor electrolysis module for oxygen generation in advanced life support systems
Water electrolysis system for carbon dioxide reduction and oxygen generation in closed cabin atmosphere
Water electrolysis process for aircrew oxygen system development
Electrodeless electrolysis of solid ionic conductors and fused salts without contact leads, using electron beams and glow discharge
Module utilizes static water-feed electrolysis system and air-cooled fins to remove heat generated by cell inefficiencies. Module generates 0.15 pounds of oxygen and 0.0188 pounds of hydrogen at current density of 100 amps per square foot. Generator operates in aircraft, spacecraft, or submarine cabins.
Water vapor is absorbed in hygroscopic electrolyte, and oxygen generated by absorbed water electrolysis at anode is added simultaneously to air stream. Cell applications include on-board aircraft oxygen systems, portable oxygen generators, oxygen concentration requirements, and commercial air conditioning and dehumidifying systems.
Water electrolysis rocket engine with self- regulating stoichiometric fuel mixing regulator
Operation method for combined electrolysis device and fuel cell using molten salt to produce power by thermoelectric regeneration mechanism
Performance tests of CO2-H2O solid oxide electrolyte electrolysis system for generation of oxygen for life support systems
Design, fabrication, and testing of circulating electrolyte type water electrolysis system for automatic control of spacecraft total pressure and oxygen partial pressure
Mathematical model of processes occurring in electrochemical reactor part of water vapor electrolysis cell
Design and tests of water vapor electrolysis cell for generating and regulating spacecraft oxygen and for controlling humidity
Establishing solar cell array criteria for use as primary power source in lunar-based water electrolysis system
Automated self sterilizing breadboard unit for potable water reclamation from urine by electrolysis-electrodialysis for long term space missions
Water vapor electrolysis for oxygen generation and humidity control in long term manned space flight
Degasser, a cylindrical container made of plastic thick enough to withstand operating pressures of electrolysis module, removes accumulated gases from water cavities without loss of electrolyte.
Theoretical and experimental studies on high pressure electrolysis producing hydrogen and oxygen for energy storage and reconversion are reported. Moderate temperature, high pressure hydrogen/oxygen fuel cells with nickel electrodes are investigated for effects of pressure, temperature, and membrane porosity. Test results from an aphodid burner turbine generator combination obtained 40 percent kilowatt hours out of the fuel cell divided by kilowatt hours into the electrolyzer. It is concluded that high pressure hydrogenation of organic materials can be used to synthesize hydrozenes and methanes for making synthetic vehicular fuels.
The anodic electrochemical behavior of the water vapor electrolysis cell was investigated. A theoretical review of various aspects of cell overvoltage is presented with special emphasis on concentration overvoltage and activation overvoltage. Other sources of overvoltage are described. The experimental apparatus controlled and measured anode potential and cell current. Potentials between 1.10 and 2.60 V (vs NHE) and currents between 0.1 and 3000 mA were investigated. Different behavior was observed between the standard cell and the free electrolyte cell. The free electrolyte cell followed typical Tafel behavior (i.e. activation overvoltage) with Tafel slopes of about 0.15, and the exchange current densities of 10 to the minus 9th power A/sq cm, both in good agreement with literature values. The standard cell exhibitied this same Tafel behavior at lower current densities but deviated toward lower than expected current densities at higher potentials. This behavior and other results were examined to determine their origin.