The effect of different pulse patterns on the plasma reduction of CO2 for a nanosecond discharge

Endothermic reactions can be used to store renewable electricity in chemical form. Here we report on the reduction of CO2 to CO and O-2 using a nanosecond repetitively pulsed discharge at atmospheric pressure. We find that by changing the inter-pulse duration, different values for the CO2 dissociation and energy efficiency can be obtained for the same energy input. This finding opens the way to a better understanding of plasma-based technologies for the valorization of CO2.