Four coaxial cylinder dielectric barrier discharge micro-plasma reactors were designed for the non-catalytic decomposition of pure CO₂ into CO and O₂ at low temperature and ambient pressure. The influence of segmented outer electrodes on the electrical characteristics and the reaction performance was investigated. Experimental results indicated that the introduction of segmented outer electrodes can significantly promote the decomposition of CO₂. Encouragingly, the highest conversion of 13.1% was obtained at an applied voltage of 18 kV, which was a substantial increase of 39.4% compared to the traditional device. Compared with other types of dielectric barrier discharge plasma reactors, the proposed segmented outer electrode micro-plasma reactor can give a higher CO₂ conversion and acceptable energy efficiency. The increase in conversion can be attributed mainly to the enhanced corona discharge caused by the fringe effect at electrode edges, the increase in energy density and the increase in the number of micro-discharges. In addition, detailed electrical characterization was performed to reveal some trends in the electrical behavior of proposed reactors.

设计了四个同轴圆柱介质阻挡放电微等离子体反应器，用于在低温和环境压力下将纯CO ₂非催化分解为CO和O ₂。研究了分段外电极对电学特性和反应性能的影响。实验结果表明，分段外电极的引入可以明显促进CO ₂的分解。令人鼓舞的是，在18 kV的施加电压下获得了13.1％的最高转化率，与传统设备相比，大幅提高了39.4％。与其他类型的介质阻挡放电等离子体反应器相比，该分段式外电极微等离子体反应器可以提供更高的CO ₂转化率和可接受的能量效率。转化率的提高主要归因于电极边缘的条纹效应引起的电晕放电增强，能量密度的提高以及微放电次数的增加。此外，进行了详细的电学表征以揭示拟议反应堆电学行为的一些趋势。