Journal of Space Science and Experiment >
Martian CO2 Decomposition Using a Coaxial Dielectric Barrier Discharge Reactor
Online published: 2026-04-10
For the requirement of in-situ utilization of Martian atmosphere resources in future Mars exploration missions, a non-thermal plasma Martian atmosphere oxygen production system was established. Carbon dioxide conversion experiments were conducted using a coaxial dielectric barrier discharge reactor under simulated Martian environmental conditions. This study investigated the effects of key operational parameters such as discharge power and gas flow rate on CO2 conversion and oxygen production rate. It was found that increasing the discharge power could effectively promote CO2 decomposition, and the optimal gas flow rate was determined. In-situ spectroscopic diagnostics were used to examine the species and distribution of molecular and ionic excited states of major gases under different operating conditions. The relationship between working performance and intensities of emission lines was evaluated. The experimental results demonstrate that the coaxial dielectric barrier discharge can effectively convert CO2 under low pressure conditions, providing a valid basis for future engineering applications and potential extension to in-situ production of methane and/or other hydrocarbons.
Yichen MA , Yufei WANG , Tingting WANG , Zhenyu YANG , Chang TAN . Martian CO2 Decomposition Using a Coaxial Dielectric Barrier Discharge Reactor[J]. Journal of Space Science and Experiment, 2026 , 3(1) : 70 -78 . DOI: 10.19963/j.cnki.2097-4302.2026.01.008
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