In this work, we have studied the dissociative chemisorption of CO 2 on a Cu(110) using a heated nozzle with E i up to 4.6 eV. Our findings reveal that the S 0 increases very slowly with increasing E i beyond 2 eV. Additionally, the E i dependence of S 0 is consistent with total energy scaling, indicating a significant corrugation in the interaction potential. Another finding of this work is that vibrational energy (especially the bending mode) does not play a significant role in the dissociation probability, with an upper limit of vibrational efficacy estimated to be 0.25. These observations are consistent with previous UHV adsorption studies that reported no chemisorption state of CO 2 on the Cu(110) surface. Furthermore, an increase in the saturation coverage from 0.5 ML to 0.66 ML at E i higher than 3 eV shows that new surface sites with higher activation barriers become accessible at higher E i .