Cited by 24Molten salt chemistry and electrochemical processesElectrocatalysts for Energy ConversionCO2 Reduction Techniques and Catalysts

Extracting Oxygen from Chang’e-5 Lunar Regolith Simulants

Shi, Hao, Li, Peng, Yang, Zhengshan, Zheng, Kaiyuan, Du, Kaifa, Guo, Lei, Yu, Rui, Wang, Peilin +2 more·2022·ACS Sustainable Chemistry & Engineering

Abstract

Harvesting oxygen and metals from the local resources of the Moon is a key step to advancing outer space exploration. A large amount of oxygen is stored in the lunar regolith in the form of oxides. Many efforts have been devoted to electrochemically splitting oxides to oxygen and metals in molten oxides and molten salts. However, a cheap oxygen-evolution inert anode is still a serious challenge, especially in the supercorrosive molten halides. Herein, we combine a molten CaCl 2 electrolyzer that can convert Chang’e-5 lunar regolith simulants to metals and CO 2 using a carbon anode and a molten carbonate electrolyzer that can convert the generated CO 2 to carbon and oxygen using a cheap Ni11Fe10Cu oxygen-evolution anode. Further, the electrolytic carbon is reused as the anode in the molten CaCl 2 electrolyzer, thereby closing the carbon cycle. Hence, the overall electrochemical reaction of the dual-electrolyzer system is to convert lunar regolith to metals and oxygen. More broadly, this system can convert the CO 2 generated by humans living on the Moon and Mars to oxygen and carbon materials.

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Crossref · 10.1021/acssuschemeng.2c03545

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44 of 44 references verified0 citation errors · 0 not checkable

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  • Electrolytes include molten calcium chloride, molten cryolite, molten regolith, and ionic liquid.

    “Electrolytes include molten calcium chloride, 114,115 molten cryolite, 116 molten regolith, 117,118 and ionic liquid. 119,120”

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Authors
Shi, H., Li, P., Yang, Z., Zheng, K., Du, K., Guo, L., Yu, R., Wang, P., Yin, H., & Wang, D.
Affiliations
Wuhan University (CN)
Corresponding author
  • Yin, Huayi
  • Wang, Dihua
Venue
ACS Sustainable Chemistry & Engineering
Published
2022-10-06
Volume
10
Issue
41
Pages
13661-13668
ISSN
2168-0485 (ISSN-L)
OpenAlex
W4302424971
Cited by
24
References
44
Citations by year
2026: 8 · 2025: 7 · 2024: 8 · 2023: 1
FWCI
1.58
Type
journal article
Language
en
Open access
closed
Locations
ACS Sustainable Chemistry & Engineering (publishedVersion)
Funders
National Natural Science Foundation of China (21673162, 51874211, 52031008)
Topics
  • Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Molten salt chemistry and electrochemical processes
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
Keywords
lunar regolith simulant, oxygen extraction, in-situ resource utilization, carbon anodes, CO2 conversion

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