A Novel Low Voltage Plasma Reactor Using Carbon Fibre Electrodes for CO₂ Splitting with O₂-Free Products

Carbon dioxide (CO₂) emissions have intensified the natural greenhouse effect, leading to global warming. Among the strategies to mitigate this issue, CO₂ splitting using plasma technologies faces challenges such as high voltage requirements, low efficiency, and costly separation processes due to oxygen (O₂) by-products. In this study, we present a novel low voltage plasma reactor using carbon fibre electrodes for CO₂ splitting with O₂-free products. Operating at a voltage of just 80 V, this reactor significantly reduces the cost and complexity of the overall system. We achieved a CO2 conversion rate of 17.6%, with an energy cost of 17 eV per molecule, demonstrating superior overall performance. Notably, no O₂ by-products were detected, thus eliminating the need for expensive separation processes. We believe that, with further optimization, this reactor holds significant industrial potential and could contribute to reducing the greenhouse effect.