WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.
ESA - European Space Research and Technology Centre, Keplerlaan, Noordwijk, 2201 AZ, Netherlands.
Nat Commun. 2022 Feb 8;13(1):583. doi: 10.1038/s41467-022-28147-5.
Establishing a permanent human presence on the Moon or Mars requires a secure supply of oxygen for life support and refueling. The electrolysis of water has attracted significant attention in this regard as water-ice may exist on both the Moon and Mars. However, to date there has been no study examining how the lower gravitational fields on the Moon and Mars might affect gas-evolving electrolysis when compared to terrestrial conditions. Herein we provide experimental data on the effects of gravitational fields on water electrolysis from 0.166 g (lunar gravity) to 8 g (eight times the Earth's gravity) and show that electrolytic oxygen production is reduced by around 11% under lunar gravity with our system compared to operation at 1 g. Moreover, our results indicate that electrolytic data collected using less resource-intensive ground-based experiments at elevated gravity (>1 g) may be extrapolated to gravitational levels below 1 g.
在月球或火星上建立永久人类存在需要安全的氧气供应，以支持生命支持和燃料补给。在这方面，水电解吸引了广泛的关注，因为水冰可能存在于月球和火星上。然而，迄今为止，还没有研究探讨月球和火星较低的重力场如何影响与地面条件相比的气体析出电解。在此，我们提供了关于重力场对水电解影响的实验数据，范围从 0.166g（月球重力）到 8g（地球重力的 8 倍），并表明与在 1g 下运行相比，我们的系统在月球重力下产生的电解氧气减少了约 11%。此外，我们的结果表明，使用资源密集度较低的地面实验在较高重力（>1g）下收集的电解数据可能可以外推到 1g 以下的重力水平。
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