The reverse water-gas shift reaction has attracted significant attention as a promising solution for carbon neutrality.However, the inefficiency at low temperature restricts its progress in industrialization.In this study, we developed a high-performance PtFEc/CeO2 catalyst using a novel platinum precursor.This catalyst features fully exposed platinum (Pt) clusters that interact with CeO2, resulting in the formation of unique Ptδ+-O-Ce3+ active sites, which generate a substantial number of oxygen vacancies.The oxygen vacancy sites enhance the adsorption and activation of CO2.Moreover, the Ptδ+-O-Ce3+ sites not only facilitate the hydrogenation of CO2 by promoting hydrogen spillover from the Pt clusters to CeO2 but also reduce CO adsorption on Pt, aiding in CO release.With this synergistic interaction of dual active sites assistance, the PtFEc/CeO2 catalyst achieved a CO2 conversion of 29.2 % at 350 °C, approaching the thermodn. equilibrium yield of CO2 (30.0 %).Addnl., the PtFEc/CeO2 catalyst displayed remarkable stability, maintaining its activity without noticeable deactivation for up to 550 h.This work offers a promising strategy for enhancing the efficiency of the RWGS reaction.