Entropy engineering enables synthesis of a perovskite-derived Ni–Co–Cu/La2O3–OV catalyst for efficient and stable CO2-to-CO conversion

La 4 (NiCoAlCu)O x achieves >95% CO selectivity for 1000 h at 550 °C via tripartite active sites (Ni–Co–Cu/La 2 O 3 /oxygen vacancies). Entropy engineering overcomes stability–activity trade-offs in CO 2 hydrogenation.