Water Electrolysis Cells Designed for Microgravity Conditions in order to Establish Air Revitalization System

Sakurai, Minoru; Oguchi, Mitsuo; Hoshino, Tetsuya; Yoshihara, Shoichi; Ohmori, Katsunori; Ohnishi, Mitsuru

doi:10.4271/2005-01-2945

Cited by 5 publications

(4 citation statements)

References 1 publication

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“…(e) The principle of the reactor (adapted from ref. [ 21 ] with permission from AIAA) and (f) exterior feature of the JAXA water electrolyzer (adapted from ref. [ 9 ] with permission from AIAA).…”

Section: Recent Progress On Extraterrestrial Co 2 and H 2 O Conversion For Spacecraftmentioning

confidence: 99%

“…2 c and d) [ 6 , 20 ]. The water electrolyzer developed by JAXA has also been tested in orbit [ 8 , 9 ]. This device was obtained by modifying the more technically mature proton exchange membrane electrolytic cell, which consists of an electrolytic unit and a gas-liquid separation unit [ 9 , 21 ] (Fig.…”

Section: Recent Progress On Extraterrestrial Co 2 and H 2 O Conversion For Spacecraftmentioning

confidence: 99%

“…In recent decades, for solving the key problems of supply demand for human space stations and deep space exploration, the USA, Japan and other countries have continuously carried out research on CO 2 conversion technology as one of the crucial parts of in-situ resource utilization, developed a series of CO 2 conversion systems based on the Sabatier method [ 6 ] and Bosch reduction method [ 7 ], and carried out experimental verification of CO 2 reduction and O 2 production on the International Space Station (ISS) [ 8 , 9 ]. In 2005, the National Aeronautics and Space Administration (NASA) in the USA proposed the Resource Prospector mission, planning to carry out in-situ utilization experiments for producing O 2 from water in lunar surface soil in 2022.…”

Section: Introductionmentioning

confidence: 99%

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Extraterrestrial artificial photosynthetic materials for in-situ resource utilization

Yang

Zhang

et al. 2021

National Science Review

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Missions as aerospace milestones in human history, including returning to the moon and manned Martian missions, are being implemented in recent years. Space exploration has become one of the global common goals. And the survival and development of human beings in the extraterrestrial extreme environment is becoming the basic ability and technology for manned space exploration. For the purpose of fulfilling the goal of extraterrestrial survival, researchers in Nanjing University and the China Academy of Space Technology proposed the extraterrestrial artificial photosynthesis (EAP) technology. By simulating natural photosynthesis of green plants on the earth, EAP converts CO2/H2O into fuels and oxygen in an in-situ, accelerated and controllable manner by using waste CO2 in confined space of spacecrafts, or abundant CO2 resources in extraterrestrial celestial environment, e.g. the Mars. Thus, the material loading of manned spacecraft can be greatly reduced to support affordable and sustainable deep space exploration. In this paper, the EAP technology was compared with the existing methods of converting CO2/H2O into fuel and oxygen in the aerospace field, especially Sabatier method and Bosch reduction method. And the research progress of possible EAP materials for in-situ utilization of extraterrestrial resources were discussed in depth. This review finally listed the challenges that EAP process may encounter with, which need to be focused on for the future implementation and application. We expected to deepen the understanding of artificial photosynthetic materials and technologies, aiming to strongly support the development of manned spaceflight.

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Section: Recent Progress On Extraterrestrial Co 2 and H 2 O Conversion For Spacecraftmentioning

confidence: 99%

Section: Recent Progress On Extraterrestrial Co 2 and H 2 O Conversion For Spacecraftmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Extraterrestrial artificial photosynthetic materials for in-situ resource utilization

Yang

Zhang

et al. 2021

National Science Review

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“…Liquid water is supplied by the oxygen electrode side or hydrogen electrode side, which were two common ways of hydroelectricity electrolysis cell . The bubbles formed in liquid water in the cell are often driven by the liquid flowing at a high velocity to discharge the cell. , Visualization studies in the microgravity environment showed that the generated gas formed bubbles in liquid water, and the bubbles were not easy to leave from the electrode surface and discharge the cell in the microgravity environment. ,, With the aim of solving this problem, a newly designed cell structure of the proton exchange membrane electrolytic cell using a porous media membrane had been developed, which enabled water to be transported to the cell inlet in the form of liquid and then entered the cell channel in the form of gas under the action of membrane, and then diffused to the oxygen electrode side to participate in electrochemical reactions. , In the process of gas transmission, the supply of water vapor was mainly controlled by the rate of the electrochemical reaction on the oxygen electrode side, so it was not necessary to use a high-pressure pump to press liquid water into the cell to participate in the reaction. The porous media membrane was a key part to realize the transformation of water from liquid to gas.…”

Section: Introductionmentioning

confidence: 99%

Variation of Two-Phase Species Distribution inside a Unitized Regenerative Fuel Cell during an Electrolytic Cell Mode

Guo

et al. 2023

Energy Fuels

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A three-dimensional electrolytic cell model coupling the two-phase mass transportation behaviors in the unitized regenerative fuel cell is established. This simulation work mainly studies the distribution rule of species inside the electrolytic cell and analyzes the liquid water saturation in inlet and working voltage, respectively. The results show that the high saturation of liquid water at the inlet can increase the oxygen concentration in the catalytic layer on the oxygen side, and the oxygen concentration gradually reduces following the direction of the catalytic layer to the gas channel, and the oxygen concentration is increased with the direction from the inlet to outlet. When the cell voltage increases from 1.35 to 1.95 V, from the catalytic layer to the gas channel, the change rate of liquid water saturation increases from 0.38 to 12.89%, the change rate of hydrogen concentration increases from 0.37 to 1.70%, and the change rate of oxygen concentration decreases from 90.48 to 80.48%. It is concluded that with the increase of electrolytic cell voltage, the gas production rate increases. On the hydrogen electrode side, the high gas yield makes it easier for hydrogen discharge from the cell.

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Microfluidic system for extraterrestrial artificial photosynthetic device

Yang

Dong²,

Yang³

et al. 2022

Microsyst Technol

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Water Electrolysis Cells Designed for Microgravity Conditions in order to Establish Air Revitalization System

Cited by 5 publications

References 1 publication

Extraterrestrial artificial photosynthetic materials for in-situ resource utilization

Extraterrestrial artificial photosynthetic materials for in-situ resource utilization

Variation of Two-Phase Species Distribution inside a Unitized Regenerative Fuel Cell during an Electrolytic Cell Mode

Microfluidic system for extraterrestrial artificial photosynthetic device

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