CuxNiy/CeO2 catalyst for CO2 reduction in a creative CO2/H2 solid oxide fuel cell

CO 2 as a rich source of carbon can provide an alternative route to produce value-added chemicals. Electrocatalysis is one of the most promising approaches to convert CO 2 captured from the atmosphere into valuable chemicals. However, the CO 2 molecule is relatively stable and requires a large amount of energy to activate CO 2 for conversion. We develop a new creative type of solid-state CO 2 fuel cell that can generate high-value-added chemicals through electrochemical reduction of CO 2 without external electrical energy input while achieving self-power generation, operating in the medium temperature range of 400–700 ℃. This study demonstrates a fuel cell operating at 570 °C, which achieves a current density of 686.0 A·m −2 and a power density of 98.8 W·m −2 . Under these conditions, the fuel cell achieved a product formation rate of 140.0 μmol·g cat −1 ·h −1 . The system’s operational parameters enable its integration into combined heat and power (CHP) generation, simultaneously facilitating CO 2 conversion, thereby aligning with sustainable energy and emissions reduction strategies.