摘要：【中文】本发明属于电化学工程技术领域，涉及一种H₂/CO₂分离与CO₂加氢自耦合的方法。电化学氢泵中，将H₂/CO₂混合气体从阳极进料，将阳极出口气通入阴极作为原料，实现阴极CO₂加氢。常温、常压、外加电能时，利用氢气极低的电化学窗口实现其在阳极的高选择性、可控解离，生成的氢质子传递到阴极催化层产生原位吸附氢，参与阴极CO₂加氢。氢气跨膜传递也使阳极出口混合气中CO₂富集，将其直接作为阴极进料，实现阴极CO₂催化加氢。本发明实现了同一股H₂/CO₂原料气的氢分离与CO₂加氢在同一反应器中的同步进行、协同增效，不仅简化了流程和装置，更提高了H₂/CO₂原料气的利用率。 【EN】The invention belongs to the technical field of electrochemical engineering, and relates to a hydrogen (H)₂/CO₂Separation from CO₂A hydrogenation self-coupling method. In an electrochemical hydrogen pump, H is pumped₂/CO₂Feeding mixed gas from the anode, introducing anode outlet gas into the cathode to serve as a raw material, and realizing cathode CO₂And (4) hydrogenation. Under normal temperature and normal pressure and with external electric energy, the high-selectivity and controllable dissociation of the hydrogen at the anode is realized by utilizing the electrochemical window with extremely low hydrogen, and the generated hydrogen protons are transferred to the cathode catalyst layer to generate in-situ hydrogen adsorption to participate in the CO at the cathode₂And (4) hydrogenation. The hydrogen is transmitted across the membrane to cause CO in the mixed gas at the outlet of the anode₂Enriching, and directly using it as cathode feed to implement cathode CO₂And (4) catalytic hydrogenation. The invention realizes the same strand of H₂/CO₂Raw materialsHydrogen separation and CO of gas₂The hydrogenation is synchronously carried out and synergized in the same reactor, thereby not only simplifying the flow and the device, but also improving the H₂/CO₂The utilization rate of raw material gas.