CO₂ decomposition in dielectric barrier discharge with different electrode configurations

With the development of industry and the extraction of fossil fuels, energy crisis and excessive carbon emissions have exhibited a profound impact on the global economy and human life. The utilization of CO₂ resources not only serves to alleviate environmental issues but also enables the sustainable recycling of carbon resources. CO₂ decomposition is one of the typical CO₂ conversion process. it can directly transform CO₂ into CO and O₂, effectively achieving carbon cycling. However, the stringent reaction conditions of traditional thermal catalysis methods have led to significant costs and energy consumption. Non-thermal plasma (NTP) technology has become one of the focal points in the research of carbon dioxide decomposition due to its mild reaction conditions, cost-effectiveness, and its compatibility with clean energy sources.The performance of CO₂ decomposition reactions is greatly influenced by electron density and electron energy. Optimizing the electrode configuration of the traditional DBD systems might allow the adjustment of electron energy and electron density during the DBD discharge process, which consequently, enhances the performance of CO₂ decomposition, particularly in terms of improving energy efficiency.