Lowering the charge barrier is of central importance to develop the advanced lithium-carbon dioxide (Li-CO₂) battery with high energy efficiency, yet great challenges remain owing to the sluggish decomposition kinetics of lithium carbonate (Li₂CO₃) discharge products. Herein, we demonstrate a latent cathode catalyst by strategically constructing the heterointerfaces in hollow NiS₂/FeS₂ nanostructures dispersed on N, S co-doped graphene aerogel (NiS₂/FeS₂-NSGA), which displays an exceptional capability to enhance the Li₂CO₃ decomposition rate, thereby remarkably improving the Li-CO₂ battery performance. It has been revealed that the functional heterointerfaces can effectively facilitate the electron transfer and tailor the electronic structure of cathode catalyst, and the hierarchical porous architecture provided by NSGA component favors the mass and electrolyte transportation. Consequently, associated with these synergistic merits, the Li-CO₂ battery with NiS₂/FeS₂-NSGA cathode catalyst delivers a significantly reduced discharge–charge overpotential of 1.10 V at a current density of 0.1 A g⁻¹. Moreover, such battery can be stably cycled over 127 cycles at an increased current density of 1 A g⁻¹ and simultaneously exhibits a superb rate capability. These results highlight the significant role of heterointerface active sites in considerably promoting the Li₂CO₃ decomposition, opening a new avenue to advance the promising Li-CO₂ battery technique.

降低充电势垒对于开发具有高能量效率的先进锂-二氧化碳（Li-CO ₂）电池至关重要，但由于碳酸锂（Li ₂ CO ₃）放电产物的缓慢分解动力学，仍然存在巨大挑战。在此，我们通过在分散在 N、S 共掺杂石墨烯气凝胶（NiS ₂ /FeS ₂ -NSGA）上的空心 NiS ₂ /FeS ₂纳米结构中战略性地构建异质界面来展示潜在的阴极催化剂，这显示出增强锂的特殊能力₂ CO ₃分解率，从而显着提高Li-CO ₂电池性能。研究表明，功能异质界面可以有效地促进电子转移并调整阴极催化剂的电子结构，NSGA 组件提供的分层多孔结构有利于质量和电解质的传输。因此，与这些协同优点相关的是，具有 NiS ₂ /FeS ₂ -NSGA 阴极催化剂的 Li-CO ₂电池在 0.1 A g ^-1的电流密度下显着降低了 1.10 V 的放电-充电过电位。此外，这种电池可以在 1 A g ^-1的增加电流密度下稳定循环超过 127 个循环。并同时表现出极好的速率能力。这些结果突出了异质界面活性位点在显着促进 Li ₂ CO ₃分解方面的重要作用，为推进有前景的 Li-CO ₂电池技术开辟了新途径。